|F-5A/B Freedom Fighter
F-5E/F Tiger II
|A late production F-5E Tiger II for the USAF, differentiated by the longer dorsal spine|
|National origin||United States|
|First flight||F-5A: 30 July 1959
F-5E: 11 August 1972
|Primary users||United States Navy
Republic of China Air Force
Republic of Korea Air Force
Islamic Republic of Iran Air Force
|Number built||A/B/C: 847
|Developed from||Northrop T-38 Talon|
Shaped Sonic Boom Demonstration
|Developed into||Northrop F-20 Tigershark, HESA Saeqeh|
The Northrop F-5A/B Freedom Fighter and the F-5E/F Tiger II are part of a supersonic light fighter family, initially designed in the late 1950s by Northrop Corporation. Being smaller and simpler than contemporaries such as the McDonnell Douglas F-4 Phantom II, the F-5 cost less to both procure and operate, making it a popular export aircraft. The F-5 started life as a privately funded light fighter program by Northrop in the 1950s. The design team wrapped a small, highly aerodynamic fighter around two compact and high-thrust General Electric J85 engines, focusing on performance and low cost of maintenance. Though primarily designed for the day air superiority role, the aircraft is also a capable ground-attack platform. The F-5A entered service in the early 1960s. During the Cold War, over 800 were produced through 1972 for U.S. allies. Though the USAF had no acknowledged need for a light fighter, it did procure roughly 1,200 Northrop T-38 Talon trainer aircraft, which were directly based on the F-5A.
After winning the International Fighter Aircraft competition in 1970, a program aimed at providing effective low-cost fighters to American allies, Northrop introduced the second-generation F-5E Tiger II in 1972. This upgrade included more powerful engines, higher fuel capacity, greater wing area and improved leading edge extensions for a better turn rate, optional air-to-air refueling, and improved avionics including air-to-air radar. Primarily used by American allies, it was also used in US training exercises. A total of 1,400 Tiger IIs were built before production ended in 1987. More than 3,800 F-5 and T-38 aircraft were produced in Hawthorne, California.
The F-5 was also developed into a dedicated reconnaissance version, the RF-5 Tigereye. The F-5 also served as a starting point for a series of design studies which resulted in the Northrop YF-17 and the F/A-18 navalized fighter aircraft. The Northrop F-20 Tigershark was an advanced variant to succeed the F-5E which was ultimately canceled when export customers did not emerge. The F-5N/F variants are in service with the United States Navy and United States Marine Corps as an adversary trainer. Approximately 500 aircraft are still in service as of 2014.[N 1]
- 1 Design and development
- 2 Operational history
- 3 Variants
- 4 Operators
- 5 Aircraft on display
- 6 Specifications (F-5E Tiger II)
- 7 Notable appearances in media
- 8 See also
- 9 References
- 10 External links
Design and development
The design effort was led by Northrop vice president of engineering and aircraft designer Edgar Schmued, who previously at North American Aviation had been the chief designer of the successful North American P-51 Mustang and F-86 Sabre fighters. Schmued recruited a strong engineering team to Northrop and assigned them the goal of reversing the trend in fighter development towards greater size and weight in order to deliver an aircraft with high performance, enhanced maneuverability, and high reliability, while still delivering a cost advantage over contemporary fighters. Recognizing that expensive jet aircraft could not viably be replaced every few years, he also demanded "engineered growth potential" allowing service longevity in excess of 10 years. Schmued recognized that new jet engine and aerodynamic technology were crucial to these goals, such as the compact but high thrust-to-weight ratio General Electric J85 turbojet engine, and the recently discovered transonic area rule to reduce drag. The J85 engine had been developed to power McDonnell's ADM-20 Quail decoy employed upon the Boeing B-52 Stratofortress. This engine with thrust-to-weight ratios of 6.25 to 7.5 over various versions had a notable thrust per lb. advantage over contemporaries, such as the 4.7 thrust-to-weight ratio of the J79 engine used in the F-4 Phantom.
Another highly influential figure was chief engineer Welko Gasich, who convinced Schmued that the engines must be located within the fuselage for maximum performance. Gasich also for the first time introduced the concept of "life cycle cost" into fighter design, which provided the foundation for the F-5's low operating cost and long service life. The low costs involved has been recognized as an important element of the aircraft's effectiveness;[N 2] defense analyst and combat aircraft architect Pierre Sprey stated in a 1982 U.S. Department of Defense report that: "Increases in cost and complexity that were unnecessary to enhance air-to-air effectiveness have decreased today's effective force size per constant dollar by factors of 25 to 75, relative to the F-86's 2000 sorties/day per billion dollars.[N 3] The only exception to this strikingly adverse trend is the F-5E, which manages to produce 500 sorties/day per billion dollars." The total cost of an F-5 sortie is approximately 20% that of an F-16 sortie.
The F-5 development effort was formally started in the mid-1950s by Northrop Corporation for a low-cost, low-maintenance fighter. The company designation for the first design as the N-156, intended partly to meet a U.S. Navy requirement for a jet fighter to operate from its escort carriers, which were too small to operate the Navy's existing jet fighters. That requirement disappeared when the Navy decided to withdraw the escort carriers; however Northrop continued development of the N-156, both as a two-seat advanced trainer, designated as N-156T, and a single-seat fighter, designated as N-156F.
The N-156T was quickly selected by the United States Air Force as a replacement for the T-33 in July 1956. On 12 June 1959, the first prototype aircraft, which was subsequently designated as YT-38 Talon, performed its first flight. By the time production had ended in January 1972, a total of 1,158 Talons were produced. Development of the N-156F continued at a lower priority as a private venture by Northrop; on 25 February 1958, an order for three prototypes was issued for a prospective low-cost fighter that could be supplied under the Military Assistance Program for distribution to less-developed nations. The first N-156F flew at Edwards Air Force Base on 30 July 1959, exceeding the speed of sound on its first flight.
Although testing of the N-156F was successful, demonstrating unprecedented reliability and proving superior in the ground-attack role to the USAF's existing North American F-100 Super Sabres, official interest in the Northrop type waned, and by 1960 it looked as if the program was a failure. Interest revived in 1961 when the United States Army tested it, (along with the Douglas A-4 Skyhawk and Fiat G.91) for reconnaissance and close-support. Although all three types proved capable during Army testing, operating fixed-wing combat aircraft was legally the responsibility of the Air Force, which would not agree to operate the N-156 or allow the Army to operate fixed-wing combat aircraft, a situation repeated with the C-7 Caribou.
In 1962, however, the Kennedy Administration revived the requirement for a low-cost export fighter, selecting the N-156F as winner of the F-X competition on 23 April 1962 subsequently becoming the "F-5A", being ordered into production in October that year. It was named under the 1962 United States Tri-Service aircraft designation system, which included a re-set of the fighter number series (the General Dynamics F-111 was the highest sequentially numbered P/F-aircraft to enter service under the old number sequence). Northrop manufactured a total of 624 F-5As, including three YF-5A prototypes, before production ended in 1972. A further 200 F-5B two-seat trainer aircraft, lacking a nose-mounted cannon but otherwise combat-capable, and 86 RF-5A reconnaissance aircraft, fitted with a four-camera nose, were also built. In addition, Canadair built 240 first generation F-5s under license, CASA in Spain built 70 more aircraft.
F-5E and F-5F Tiger II
In 1970, Northrop won the International Fighter Aircraft (IFA) competition to replace the F-5A, with better air-to-air performance against aircraft like the Soviet MiG-21. The resultant aircraft, initially known as F-5A-21, subsequently became the F-5E. It had more powerful (5,000 lbf) General Electric J85-21 engines, and had a lengthened and enlarged fuselage, accommodating more fuel. Its wings were fitted with enlarged leading edge extensions, giving an increased wing area and improved maneuverability. The aircraft's avionics were more sophisticated, crucially including a radar (initially the Emerson Electric AN/APQ-153) (the F-5A and B had no radar). It retained the gun armament of two M39 cannon, one on either side of the nose of the F-5A. Various specific avionics fits could be accommodated at customer request, including an inertial navigation system, TACAN and ECM equipment.
The first F-5E flew on 11 August 1972. A two-seat combat-capable trainer, the F-5F, was offered, first flying on 25 September 1974, with a new, longer nose, which, unlike the F-5B that did not mount a gun, allowed it to retain a single M39 cannon, albeit with a reduced ammunition capacity. The two-seater was equipped with the Emerson AN/APQ-157 radar, which is a derivative of the AN/APQ-153 radar, with dual control and display systems to accommodate the two-men crew, and the radar has the same range of AN/APQ-153, around 10 nmi.
A reconnaissance version, the RF-5E Tigereye, with a sensor package in the nose displacing the radar and one cannon, was also offered.
The F-5E eventually received the official name Tiger II; 792 F-5Es, 146 F-5Fs and 12 RF-5Es were eventually built by Northrop. More were built under license overseas: 91 F-5Es and -Fs in Switzerland, 68 by Korean Air in South Korea, and 308 in Taiwan.
According to Pierre Sprey, the F-5 was perhaps the most effective U.S. air-to-air fighter in the 1960s and early 1970s based on cost and performance.[N 4] A small visual and radar cross section size and consequent detection difficulty often conferred the F-5 the advantage of surprise. The aircraft also has a high sortie rate, low accident rate, high maneuverability, and is armed with a combination of 20mm cannon and heat seeking missiles. The flying qualities of the F-5 are often highly rated, comparable to the North American F-86 Sabre and the General Dynamics F-16 Fighting Falcon.
The F-5 proved to be a successful combat aircraft for U.S. allies, but had no combat service with the U.S. Air Force. The F-5E evolved into the single-engine F-5G, which was rebranded the F-20 Tigershark. It lost out on export sales to the F-16 in the 1980s.
The F-5E experienced numerous upgrades in its service life, with the most significant one being adopting a new planar array radar, Emerson AN/APQ-159 with a range of 20 nmi to replace the original AN/APQ-153. Similar radar upgrades were also proposed for F-5F, with the derivative of AN/APQ-159, the AN/APQ-167, to replace the AN/APQ-157, but that was cancelled. The latest radar upgrade included the Emerson AN/APG-69, which was the successor of AN/APQ-159, incorporating mapping capability. However, most nations chose not to upgrade for financial reasons, and the radar saw very little service in USAF aggressor squadrons and Swiss air force.
Various F-5 versions remain in service with many nations. Singapore has approximately 49 modernized and re-designated F-5S (single-seat) and F-5T (two-seat) aircraft. Upgrades include new FIAR Grifo-F X-band radar from Galileo Avionica (similar in performance to the AN/APG-69), updated cockpits with multi-function displays, and compatibility with the AIM-120 AMRAAM and Rafael Python air-to-air missiles.
One NASA F-5E was given a modified fuselage shape for its employment in the Shaped Sonic Boom Demonstration program carried out by DARPA. It is preserved in the Valiant Air Command Warbird Museum at Titusville, Florida.
The Royal Thai Air Force (RTAF) had their F-5s undergo an entensive upgrade program, resulting in the aircraft re-designated as F-5T Tigris. They are armed with Python III and IV missiles; and equipped with the Dash helmet-mounted cueing system.
Similar programs have been carried out in Chile and Brazil with the help of Elbit. The Chilean upgrade, called the F-5 Tiger III Plus, incorporated a new Elta EL/M-2032 radar and other improvements. The Brazilian program, re-designated as F-5M, adds a new Grifo-F radar along with several avionics and cockpit refurbishments, including the Dash helmet. The F-5M has been equipped with new weapon systems such as the Beyond Visual Range Derby missile, Python IV short-range air-to-air missile, SMKBs smart bomb, and several other weapons.
The first contract for the production F-5A was issued in 1962, the first overseas order coming from the Royal Norwegian Air Force on 28 February 1964. It entered service with the 4441st Combat Crew Training School of the USAF, which had the role of training pilots and ground crew for customer nations, on 30 April that year. At that point, it was still not intended that the aircraft be used in significant numbers by the USAF itself.
This changed with testing and limited deployment in 1965. Preliminary combat evaluation of the F-5A began at the Air Proving Ground Center, Eglin AFB, Florida, during the summer of 1965 under project Sparrow Hawk, with one airframe lost through pilot error on 24 June. In October 1965, the USAF began a five-month combat evaluation of the F-5A titled Skoshi Tiger. A total of 12 aircraft were delivered for trials to the 4503rd Tactical Fighter Squadron, and after modification with probe and drogue aerial refueling equipment, armor and improved instruments, were redesignated as the F-5C. Over the next six months, they performed combat duty in Vietnam, flying more than 2,600 sorties, both from the 3rd Tactical Fighter Wing at Bien Hoa over South Vietnam and from Da Nang Air Base where operations were flown over Laos. Nine aircraft were lost in Vietnam, seven to enemy ground fire and two to operational causes. Although declared a success, with the aircraft generally rated as capable a ground-attack aircraft as the F-100, but suffering from a shorter range, the program was considered a political gesture intended to aid the export of more F-5s than a serious consideration of the type for U.S. service. From April 1966, the aircraft continued operations as 10th Fighter Commando Squadron with their number boosted to 17 aircraft. (Following Skoshi Tiger the Philippine Air Force acquired 23 F-5A and B models in 1965. These aircraft, along with remanufactured Vought F-8 Crusaders, eventually replaced the Philippine Air Force's F-86 Sabre in the air defense and ground attack roles.)
In June 1967, the 10th FCS's surviving aircraft were supplied to the air force of South Vietnam, which previously had only Cessna A-37 Dragonfly and Douglas A-1 Skyraider attack aircraft. This new VNAF squadron was titled the 522nd. The president of Vietnam had originally asked for F-4 Phantoms used by the Americans, but the VNAF flew primarily ground support as the communist forces employed no opposing aircraft over South Vietnam. When Bien Hoa was later overrun by Communist forces, several aircraft were captured and used operationally by the NVAF, in particular against Khmer Rouge. In view of the performance, agility and size of the F-5, it might have appeared to be a good match against the similar MiG-21 in air combat; however, U.S. doctrine was to use heavy, faster and longer-range aircraft like the Republic F-105 Thunderchief and McDonnell Douglas F-4 Phantom II over North Vietnam. 41 F-5s were captured by the NVA when they defeated South Vietnam on 30 April 1975; of the captured equipment, the Soviets took delivery of a complete F-5E, along with various spare parts and support equipment; aircraft would arrive in Poland and Russia for study of U.S. aviation technology, while others were decommissioned and put on display at museums in Vietnam.
The F-5 was also adopted as an opposing forces (OPFOR) "aggressor" for dissimilar training role because of its small size and performance similarities to the Soviet MiG-21. In realistic trials at Nellis AFB in 1977, the F-14 reportedly scored slightly better than a 2:1 kill ratio against the simpler F-5, while the F-15 scored slightly less. There is some contradiction of these reports, another source reports that "For the first three weeks of the test, the F-14's and F-15's were hopelessly outclassed and demoralized"; after adapting to qualities of the F-5 and implementing rule changes to artificially favor long range radar-guided missiles, "the F-14's did slightly better than breaking even with the F-5's in non-1 v 1 engagements; the F-15's got almost 2:1". A 2012 Discovery Channel documentary Great Planes reported that in USAF exercises, F-5 aggressor aircraft were competitive enough with more modern and expensive fighters to only be at small disadvantage in Within Visual Range (WVR) combat.
The F-5E served with the U.S. Air Force from 1975 until 1990, in the 64th Aggressor Squadron and 65th Aggressor Squadron at Nellis Air Force Base in Nevada, and with the 527th Aggressor Squadron at RAF Alconbury in the UK and the 26th Aggressor Squadron at Clark Air Force Base in the Philippines. The U.S. Marines purchased used F-5s from the Air Force in 1989 to replace their F-21s, which served with VMFT-401 at Marine Corps Air Station Yuma. The U.S. Navy used the F-5E extensively at the Naval Fighter Weapons School (TOPGUN) when it was located at NAS Miramar, California. When TOPGUN relocated to become part of the Naval Strike and Air Warfare Center at NAS Fallon, Nevada, the command divested itself of the F-5, choosing to rely on VC-13 (redesignated VFC-13 and which already used F-5s) to employ their F-5s as adversary aircraft. Former adversary squadrons such as VF-43 at NAS Oceana, VF-45 at NAS Key West, VF-126 at NAS Miramar, and VFA-127 at NAS Lemoore have also operated the F-5 along with other aircraft types in support of Dissimilar Air Combat Training (DACT).
The U.S. Navy F-5 fleet continues to be modernized with 36 low-hour F-5E/Fs purchased from Switzerland in 2006. These were updated as F-5N/Fs with modernized avionics and other improved systems. Currently, the only U.S. Navy and U.S. Marine Corps units flying the F-5 are VFC-13 at NAS Fallon, Nevada, VFC-111 at NAS Key West, Florida, and VMFT-401 at MCAS Yuma, Arizona. Currently, VFC-111 operates 18 Northrop F-5N/F Tiger IIs. 17 of these are single-seater F-5Ns and the last is a twin-seater F-5F "FrankenTiger", the product of grafting the older front-half fuselage of an F-5F into the back-half fuselage of a newer low-hours F-5E acquired from the Swiss Air Force. A total of three "FrankenTigers" were made.
In October 1974, the Brazilian Air Force (FAB) ordered 36 F-5E and 6 F-5B aircraft from Northrop for $72 million. The first three aircraft arrived on 12 March 1975. In 1988, FAB acquired 22 F-5E and four F-5F second-hand USAF "agressor" fighters. A total of 15 of these aircraft were part of the initial batch of 30 aircraft produced by Northrop. In 1990, FAB retired all remaining five F-5Bs; later, they were sent to Brazilian museums around the country.
In 2001, Elbit Systems and Embraer started work on a $230 million Brazilian F-5 modernization program, performed over an eight-year period, upgrading 46 F-5E/F aircraft, re-designated as F-5EM and F-5FM. The modernization centered on several areas: new electronic warfare systems, the Grifo F radar, an air-to-air refueling system, INS/GPS-based navigation, support for new weapons, targeting and self-defense systems, HOTAS, LCD displays, helmet-mounted displays (HMDs), Radar Warning Receiver, encrypted communications, cockpit compatibility for night vision goggles, On-Board Oxygen Generation System (OBOGS) and various new onboard computer upgrades. One important capability is the secure communication with R-99 airborne early warning platforms and ground stations.
Externally, the new aircraft features a larger nose cone that accommodates the larger radar equipment. The first F-5EM was handed over on 21 September 2005. On 7 July 2003, four Rafael Litening III targeting pods were ordered at a cost of USD 13 million, to be used on F-5M together with three Rafael Sky Shield jamming pods ordered in 5 July 2006 at a cost of USD 42 million.
In 2009, FAB bought eight single-seat and three twin-seat F-5F used aircraft from Jordan in a US$21 million deal. These aircraft were built between 1975 and 1980. On 14 April 2011, a contract of $153 million was signed with Embraer and Elbit to modernize the additional F-5s bought from Jordan, and to supply one more flight simulator as a continuation of the contract signed in 2000. These F-5s will receive the same configuration as those from the initial 46 F-5s currently completing the upgrade process. The first delivery of this second batch of upgraded jet fighters is scheduled for 2013 with expected use to 2030.
Ethiopia received 10 F-5As and two F-5Bs from the U.S. starting in 1966. In addition to these, Ethiopia had a training squadron equipped with at least eight Lockheed T-33 Shooting Stars. In 1970, Iran transferred at least three F-5As and Bs to Ethiopia. In 1975, another agreement was reached with the U.S. to deliver a number of military aircraft, including 14 F-5Es and three F-5Fs; later in the same year eight F-5Es were transferred while the others were embargoed and delivered to a USAF aggressor Squadron due to the changed political situation. The U.S. also withdrew its personnel and cut diplomatic relations. Ethiopian officers contracted a number of Israelis to maintain American equipment.
The Ethiopian F-5 fighters saw combat action against Somali forces during the Ogaden War (1977–1978). The main Somali fighter aircraft was the MiG-21MF delivered in the 1970s, supported by Mikoyan-Gurevich MiG-17s delivered in the 1960s by the Soviet Union. Ethiopian F-5E aircraft were used to gain air superiority because they could use the AIM-9B air-to-air missile, while the F-5As were kept for air interdiction and air strike. During this period Ethiopian F-5Es went on training against Ethiopian F-5As and F-86 Sabres (simulating Somali MiG-21s and MiG-17s).
On 17 July 1977, two F-5s flown by Israeli pilots were on combat air patrol near Harer, when four Somali MiG-21MFs were detected nearby. In the engagement, two MiG-21s were shot down while the other two had a midair collision while avoiding an AIM-9B missile. The better-trained F-5 pilots swiftly gained air superiority over the Somali Air Force, shooting down a number of aircraft, while other Somali aircraft were lost to air defense and to incidents. However at least three F-5s were shot down by air defense forces during attacks against supply bases in western Somalia.
The Imperial Iranian Air Force (IIAF) received extensive U.S. equipment in the 1960s and 1970s. Iran received its first 11 F-5As and two F-5Bs in February 1965 which were then declared operational in June 1965. Ultimately, Iran received 104 F-5As and 23 F-5Bs by 1972. From January 1974 with the first squadron of 28 F-5Fs, Iran received a total of 166 F-5E/Fs and 15 additional RF-5As with deliveries ending in 1976. While receiving the F-5E and F, Iran began to sell its F-5A and B inventory to other countries, including Ethiopia, Turkey, Greece and South Vietnam; by 1976, many had been sold, except for several F-5Bs retained for training purposes. F-5s, were also used by the IIAF's aerobatic display team, the Golden Crown.
After the Iranian revolution in 1979, the new Islamic Republic of Iran Air Force (IRIAF) was partially successful at keeping Western fighters in service during the war with Iraq in the 1980s and the simple F-5 had a good service readiness until late in the war. Initially Iran took spare parts from foreign sources, later it was able to have its new aircraft industry keep the aircraft flying.
During the Iran-Iraq War, IRIAF F-5s were heavily involved, flying air-to-air and air-to-ground sorties. Iranian F-5s took part in many air combats with Iraqi Mikoyan-Gurevich MiG-21, Mikoyan-Gurevich MiG-23, Mikoyan-Gurevich MiG-25, Su-20/22, Mirage F-1 and Super Etendards scoring many victories but also suffering many losses. The exact combat record is not known with many differing claims from Iraqi, Iranian, Western, and Russian sources. Also many of the IRIAF's confirmed air-to-air kills were attributed to the Revolutionary Guards for political reasons. There are reports that an IRIAF F-5E, piloted by Major Yadollah Javadpour, shot down a MiG-25 on 6 August 1983. Russian sources state that the first confirmed kill of a MiG-25 occurred in 1985.
From a general standpoint, during the first years of service, Iranian F-5 fighter aircraft had the advantage in missile technology, using advanced versions of the IR seeking Sidewinder, later lost with deliveries of new missiles and fighters to Iraq.
Iran currently produces an indigenous aircraft titled, "Saegeh", which is built on the same platform as the F-5.
Starting on 16 October 2011 during Operation Linda Nchi, Kenyan Air Force F-5s are supporting the Kenyan forces fighting in Somalia against Al Shabab Islamists bombing targets inside Somalia and spearheading the ground forces.
In 1982, the Mexican Air Force received 12 F-5E/F after the purchase of 24 IAI Kfir C.1 was blocked by the U.S., because the Kfir used the American-produced J79 engine. These fighters accompanied the Lockheed T-33 and de Havilland Vampire Mk.I (received much earlier), two of the first combat jet aircraft in Mexico. The subsonic T-33 and the Vampire were developed in the 1940s. The F-5 gave Mexico its first supersonic platform and saw the formation of Air Squadron 401. On 16 September 1995, after more than 30 military parade flights without incidents, an F-5E collided in mid-air with three Lockheed T-33s during the military parade for the Independence of Mexico. A total of 10 deaths occurred. Since then, for safety, flyovers in Mexico have been smaller in participation. In 2007, the F-5 had its 25th anniversary in Mexican Air Force service. Mexico is looking to replace its ageing F-5s by 2015 and replace the T-33s it retired in 2007.
The Royal Norwegian Air Force received 108 Freedom Fighters: 16 RF-5A, 78 F-5A and 14 F-5B. The first 64 were received as military aid. They were in use by several squadrons, the first and last being 336 Squadron receiving the first aircraft in February 1966 (formal handing-over ceremony a month later), and deactivating in August 2000. Three aircraft were kept flying until 2007, serving with Kongsberg Defence & Aerospace for tests in the "Eye of the Tiger"-programme, developing a new seeker head for Naval Strike Missile and Joint Strike Missile. The aircraft received under military aid were handed off to Greece and Turkey. Of the aircraft bought by the Norwegian Government, nine were used in exchange with U.S. authorities for submarines of the Kobben class. In October 2011 five F-5s were given to aircraft maintenance schools around the country; including Skedsmo, Sola, Bodø and Bardufoss high schools, and the University of Agder's aerospace engineer program. The remaining 10 are being stored at Moss Airport, Rygge. Three survivors are exhibited at the Norwegian Armed Forces Aircraft Collection, two at Norsk Luftfartsmuseum in Bodø and one at Flyhistorisk Museum, Sola, near Stavanger.
The Philippine Air Force acquired 37 F-5A/B from 1965 to 1998. The F-5A/Bs were used by the Blue Diamonds Aerobatic team, underwent an upgrade which equipped it with surplus AN/APQ-153 radars with significant overhaul at the end of the 1970s to stretch their service life another 15 years. In 2005, the Philippines decommissioned its remaining F-5A/B fleet, including those received from Taiwan and South Korea. The most notable F-5A pilot of the Phil Air Force is Major Danilo Atienza. He led a flight of F-5s in the effort to retake the Sangley Point Air Base during the 1989 coup attempt, conducting air strikes, inflicting heavy damage on aircraft and facilities controlled by the rebels. He was killed in action after flames from the explosion of a fuel depot engulfed his plane during his last strafing run. Sangley Point Air Base was renamed Major Danilo Atienza Air Base in his honor.
Republic of Korea (South Korea)
The Republic of Korea Air Force (ROKAF) purchased F-5A/Bs in 1965 and purchased F-5Es in August 1974. KF-5 variants were built by Korean Air under license between 1982 and 1986. A total of 214 F-5s were procured.
Singapore is an important operator of the F-5E/F variant, first ordering the aircraft in 1976 during a massive expansion of the city-state's armed forces; delivery of this first batch of 18 F-5Es and three F-5Fs was completed by late February 1979, equipping the newly formed-up No. 144 Black Kite Squadron at Tengah Air Base. At the end of 1979, an order was placed for six more F-5Es, which were delivered by 1981. In 1982, an order for three more F-5Fs was placed, these were forward delivered in September 1983 to RAF Leuchars in Scotland where they were taken over by pilots of the Republic of Singapore Air Force (RSAF). In 1983, the type took over the duties of airborne interception from the Royal Australian Air Force's Mirage IIIOs detachment (rotated between No. 3 & No. 75 Squadron RAAF) stationed at Tengah.
Another order for six more F-5Es was placed in 1985, these were delivered the same year and would go on to equip the newly formed-up No. 149 Shikra Squadron at Tengah. The following year, the RSAF placed an order for its final batch of three F-5Fs and five F-5Es, these were delivered in December 1987 and July 1989, respectively. In a bid to modernize their air force, the Royal Jordanian Air Force put up seven F-5Es for sale in 1994, these were later acquired by Singapore.
From 1990 to 1991, using jigs and toolings purchased from Northrop, Singapore Aircraft Industries (SAI, now ST Aerospace) converted eight existing F-5Es into RF-5E Tigereye variant. Subsequently, these were used to requipped No. 141 Merlin Squadron, which had traded in their older Hawker Hunter FR.74S for the newer Tigereyes in 1992 and was by then based at Paya Lebar Air Base, after the 144 Squadron had relocated there in 1986. By June 1993, all three squadrons had been relocated to the base, thus consolidating Singapore's F-5E/F operations at Paya Lebar.
In 1991, SAI was awarded a contract as the prime contractor to modernize all RSAF F-5E/Fs (including the 7 ex-Jordanian F-5Es); Elbit Systems was the sub-contractor responsible for systems integration. Upgrades include a new X band multi-mode radar (the Italian FIAR Grifo-F, with Beyond-visual-range missile and Look-down/shoot-down capabilities), a revamped cockpit with new MIL-STD-1553R databuses, GEC/Ferranti 4510 Head-up display/weapons delivery system, two BAE Systems MED-2067 Multi-function displays, Litton LN-93 inertial navigation system (similar to the ST Aerospace A-4SU Super Skyhawk) and Hands On Throttle-And-Stick controls (HOTAS) to reduce pilot workload. Reportedly, the Elisra SPS2000 radar warning receiver and countermeasure system was also installed. Additionally, the starboard M-39 20mm cannon mounted in the nose was removed to make way for additional avionics (the sole cannon on the two-seaters was removed because of this), and to improve maneuverability, upgraded aircraft received larger leading edge root extensions (LERX). The process began in March 1996 and was completed by 2001, receiving the new designation of F-5S/T. In 1998, the eight RF-5Es also received the upgrades (except for the radar) and were redesignated as RF-5S. Each F-5S/T upgraded reportedly cost SGD$6 million.
By end of 2009, the type had accumulated more than 170,000 hours of flight time in Singapore service with only two F-5Es being lost in separate accidents (in 1984 and 1991, respectively). As of June 2011, only 141 and 144 Squadron are left operating the RF-5S and F-5S/T, as 149 Squadron has since formally transitioned to the McDonnell Douglas F-15SG Strike Eagles on 5 April 2010.
Republic of China (Taiwan)
The Republic of China Air Force (ROCAF) received its first batch of seven F-5As and two F-5Bs under the U.S. Military Assistance Program in 1965. By 1971, the ROCAF was operating 72 F-5As and 11 F-5Bs. During 1972, the U.S. borrowed 48 ROCAF F-5As to lend to the South Vietnam Air Force before the withdrawal of U.S. forces from Vietnam. By 1973, most of those loaned F-5As were not in flying condition, thus the U.S. opted to return 20 F-5As to Taiwan by drawing nine F-5As from U.S. reserves while repairing a further 11 from South Vietnam. These were sent to Taiwan to make necessary repairs, with gave 28 F-5Es issued to Taiwan by May 1975 in return. By 1973, Taiwan's AIDC started local production of a first batch of 100 F-5Es in Taiwan, the first of six Peace Tiger production batches. By end of 1986 when the production line closed after completing Peace Tiger 6, the AIDC had produced 242 F-5Es and 66 F-5Fs. Taiwan was the largest operator of the type at one time, having 336 F-5E/Fs in inventory. The last batch of AIDC F-5E/Fs featured the F-20's shark nose.
With the introduction of 150 F-16s, 60 Mirage 2000-5s and 130 F-CK-1s in mid-to-late-1990s, the F-5E/F series became second line fighters in ROCAF service and mostly are now withdrawn from service as squadrons converted to new fighters entering ROCAF service. Seven low airframe hours F-5Es were sent to ST Aerospace to convert them to RF-5E standard to fulfill a reconnaissance role previously undertaken by the retiring Lockheed RF-104G in ROCAF service. As of 2009, only about 40 ROCAF F-5E/Fs still remain in service in training roles with about 90–100 F-5E/Fs held in reserve. The other retired F-5E/F are either scrapped, or used as decoys painted in colors representing the main front line F-16, Mirage 2000-5 or F-CK-1 fighters, and deployed around major air bases.
Taiwan also tried to upgrade the F-5E/F fleet with AIDC's Tiger 2000/2001 program. The first flight took place on 24 July 2002. The program would replace the F-5E/F's radar with F-CK-1's GD-53 radar and allow the fighter to carry a single TC-2 BVRAAM on the centerline. But lack of interest from the Taiwan/ROC Air Force eventually killed the program. The only prototype is on display in AIDC in Central Taiwan.
The only air combat actions ROCAF F-5E/F pilots saw, were not over Taiwan, but in North Yemen. In 1979, a flareup between North and South Yemen prompted the U.S. to sell 14 F-5E/Fs to North Yemen to boost its air defense. Since no one in North Yemen knew how to fly the F-5E/F (only MiG-15s were operational at the time), U.S. and Saudi Arabia arranged to have 80+ ROCAF F-5E pilots plus ground crew and anti-air defense units sent to North Yemen as part of North Yemen Air Force's 115th Squadron at Sana‘a operating initially just six F-5E/Fs and then from April 1979 to May 1990, added eight more. The ROCAF piloted F-5E/F scored a few kills in a few air battles, but the ground early warning radar crews and anti-air units also suffered from air attacks from South Yemen, the aircraft being piloted by Soviet crews.
The Swiss Air Force operates a total of 42 F-5E and 12 F-5F aircraft. They were chosen chiefly because of their excellent performance, suitability for the unique Swiss Air Force mission, and their relatively low maintenance cost per flight hour. It had been expected these aircraft would be replaced by the Saab JAS 39 Gripen, but in a May 2014 referendum the Swiss public decided against the Gripen purchase. For the foreseeable future Switzerland will continue to operate its F-5 fleet until 2016.There are still plans by the Swiss Air Force and in the Swiss parliament to operate 18 F-5E and four F-5F models until 2018. This would also include the continued operation of the Patrouille Suisse on F-5E until 2018.
When South Vietnam was overrun by NVA forces on 30 April 1975, approximately 877 aircraft were captured by the communists. Of that number, 41 were F-5s. In November of that year the Soviets were offered the opportunity to "take their pick" from the captured U.S. equipment. The Russians quickly loaded one complete F-5E, along with two complete spare engines, any and all spare parts, and all ground support equipment onto a waiting Russian cargo ship. Several of the F-5s left over from the Vietnam war were sent to Poland and Russia, for advanced study of US aviation technology, while others were decommissioned and put on display at museums in Vietnam. The 935th Fighter Regiment of the VPAF 372nd Air Division was the only unit in the world flying both MiG-21 and F-5 fighters. Eventually, the lack of spare parts grounded all the aircraft captured.
Morocco used 28 F-5A/B and 2 RF-5A in the Polisario War over Western Sahara. In the 1980s, they received 24 F-5E/F, fighting against the Polisario Front. Threats faced included multiple SA-6 anti-aircraft systems, and several F-5s were lost during the conflict. Starting in 1990 they received 12 F-5 E/F from an ex-US aggressor, a total of 24 F-5Es having been upgraded to the F-5TIII standard.
Saudi Arabia deployed aircraft during the Gulf War, the F-5Es flew close air support and aerial interdiction missions against Iraqi units in Kuwait. One RSAF F-5E was lost to ground fire on 13 February 1991, the pilot was killed.
The Hellenic Air Force was the first European air force to receive the Freedom Fighter. A total of 114 F-5As (including four ex-Iranian machines), 34 RF-5As, and 20 F-5Bs were supplied to Greece.
AeroGroup, a private commercial company in the US, operates the CF-5B as a fighter lead-in aircraft for training and for other support services. There were 17 aircraft originally purchased from the Canadian Government with U.S. State Department approval and then imported into the USA in 2006.
Since 2013, Tunisian F-5s have been used in strike missions in support of major military offensives in the border region of Mount Chaambi against Ansar al-Sharia and al-Qaeda-linked militants that aim at destabilizing Tunisia's transition to democracy.
- Single-seat fighter prototype. Only three aircraft were built.
- The three prototypes were given the U.S. Air Force designation YF-5A.
- Single-seat fighter version of F-5, originally without radar, but was later equipped with AN/APQ-153 radar during upgrades.
- F-5A (G)
- Single-seat fighter version of the F-5A for the Royal Norwegian Air Force.
- This designation was given to one aircraft used for static tests.
- Designation of Spanish Air Force Northrop F-5A which served in the Ejército del Aire
- F-5C Skoshi Tiger
- 12 F-5A Freedom Fighters were tested by the US Air Force for four and a half months in Vietnam.
- F-5E Tiger II
- Single-seat fighter version with AN/APQ-159 replacing earlier AN/APQ-153 in F-5A.
- F-5E Tiger III
- Upgraded version of the F-5E in use by the Chilean Air Force, with EL/M-2032 radar replacing the original AN/APQ-159.
- A single Swiss Air Force F-5E with F-5F Wings. Currently (2011), this aircraft is part of the Museum at Meiringen air base
- The temporary designation given to the Northrop F-20 Tigershark, armed with General Electric AN/APG-67 radar.
- Ex-Swiss Air Force F-5Es used by the U.S. Navy as "aggressor" aircraft, with AN/APG-69 replacing the original AN/APQ-159. Intended to replace high-time USN/USMC F-5Es in the adversary role, and see service through to 2015.
- Upgraded version of the F-5E in use by the Republic of Singapore Air Force, equipped with the Galileo Avionica's FIAR Grifo-F X-band radar and are capable of firing the AIM-120 AMRAAM.
- F-5T Tigris
- Upgraded version of the F-5E of Royal Thai Air Force by Israel, also armed with EL/M-2032.
- Upgraded version of the F-5E of Brazilian Air Force armed with Italian Grifo-F radar.
- Upgraded version of the F-5E, in service with the Royal Moroccan Air Force.
- F-5E Tiger 2000
- Upgraded version of Taiwan AIDC, equipped with the GD-53 radar, capable of firing the TC-2 Sky Sword II, MIL-STD-1553B Link and GPS/INS
- Single-seat reconnaissance version of the F-5A fighter. Approximately 120 were built.
- RF-5A (G)
- Single-seat reconnaissance version of the F-5A fighter for the Royal Norwegian Air Force.
- RF-5E Tigereye
- Single-seat reconnaissance version of the F-5E fighter. The RF-5E Tigereye was exported to Saudi Arabia and Malaysia.
- RF-5E Tigergazer
- Seven upgraded single-seat reconnaissance version of the F-5E for Taiwan by ST Aerospace.
- RF-5S Tigereye
- Single-seat reconnaissance version of the F-5S for the Republic of Singapore Air Force.
- Spanish reconnaissance aircraft
- Thai designation of the RF-5A
- Spanish designation of the Northrop F-5B.
- Temporarily designation given to the YF-5B.
- One F-5B was fitted with a 5,000 lbf (2,268 kgf) General Electric J85-GE-21 engine, and used as a prototype for the F-5E Tiger II.
- Two-seat fighter version for the Republic of Korea Air Force, armed with AN/APQ-157 radar.
- Two-seat trainer version of the F-5B for the Royal Norwegian Air Force.
- F-5B M
- Two-seat trainer version in use by the Spanish Air Force for air combat training.
- Unbuilt trainer version.
- F-5F Tiger II
- Two-seat trainer version of F-5E Tiger II, AN/APQ-167 radar tested, intended to replace AN/APQ-157, but not carried out.
- F-5F Tiger III
- Upgraded trainer version of the F-5F in use by the Chilean Air Force.
- Upgraded F-5F in use by the Republic of Singapore Air Force.
- Upgraded trainer version of the F-5F for the Brazilian Air Force.
- Fighter versions for the Canadian Forces Air Command built under license by Canadair. Its Canadian designation is CF-116.
- Single-seat fighter version of the CF-5A for the Royal Netherlands Air Force; 75 built.
- Two-seat training version of the CF-5D for the Royal Netherlands Air force; 30 built.
- Single-seat fighter version of the F-5A for the Spanish Air Force; built under licence in Spain by CASA.
- Single-seat reconnaissance version of the RF-5A for the Spanish Air force; built under license in Spain By CASA.
- Two-seat training version of the F-5B for the Spanish Air Force. Built under license in Spain by CASA.
- Single-seat version of the CF-5A for the Venezuelan Air Force. This designation was given to some Canadair CF-116s which were sold to the Venezuelan Air Force.
- Two-seat training version of the CF-5D for the Venezuelan Air Force.
- F-5E built in South Korea for Republic of Korea Air Force. First introduction: September 1982; 48 built.
- F-5F built in South Korea for Republic of Korea Air Force. First introduction: September 1982; 20 built.
- Chung Cheng
- F-5E/F built in Taiwan for Republic of China Air Force by AIDC. First introduction: 30 October 1974, one day before the late President Chiang Kai Shek's 88th birthday, and was thus christened "Chung Cheng", an alias of President Chiang; 308 built.
- F-5E built in Iran with unknown modifications and a mid wing.
- F-5E modified in Iran with canted, twin vertical stabilizers.
In comparison to later fighters, the improved F-5E had some weaknesses; these included marginal acceleration, rearward visibility, and fuel fraction, and a lack of Beyond Visual Range (BVR) weapons once such radar guided missiles became reliable during the 1980s. The F-5G, later renamed the F-20 Tigershark, aimed to correct these weaknesses while maintaining a small size and low cost to produce a competitive fighter. Compared to the F-5E, it had 60% more power, a higher climb rate and acceleration, better cockpit visibility, more modern radar and BVR capability, and competitive performance with fourth generation fighters. Like the F-5, it had better cost effectiveness as it had the minimum necessary features relative to its competition to perform its air superiority mission. As an example, in the 1960s and early 1970s, the F-5's lack of BVR missiles was not a significant disadvantage as the kill rate of such missiles was approximately 8% to 10%, and the performance and loss of surprise (radar warning to the enemy) cost of carrying them was not practically justified. By the early 1980s, the American AIM-7 Sparrow radar-guided missile in its "M" version was realistically exceeding a 60% kill rate, and was integrated onto the F-20. Brigadier General Chuck Yeager, test pilot and the first man to break the sound barrier, referred to the F-20 as "the finest fighter". Despite its performance and cost effectiveness, the F-20 lost out for foreign sales against the similarly capable, more expensive F-16, which was being procured in large numbers by the U.S. Air Force and was viewed as having greater support.
The Northrop YF-17's aircraft's main design elements date from the F-5 based internal Northrop project N-300. The N-300 featured a longer fuselage, small leading-edge root extensions (LERX), and more powerful GE15-J1A1 turbojets. The wing was moved higher on the fuselage to increase ordnance flexibility. The N-300 further evolved into the P-530 Cobra. The P-530's wing planform and nose section was similar to the F-5, with a trapezoidal shape formed by a sweep of 20° at the quarter-chord line, and an unswept trailing edge, but was over double the area. While the YF-17 lost its bid for the USAF lightweight fighter, it would be developed into the larger McDonnell Douglas F/A-18 Hornet.
- Botswana Air Force purchased 10 upgraded CF-5As and 3 CF-5Ds from Canada in 1996. A further two CF-5Ds were purchased in 2000.
- Brazilian Air Force operates 51 F-5EM and six F-5FM; to be withdrawn gradually between 2017 and 2030.
- Chilean Air Force: Chile purchased 15 F-5Es and 3 F-5Fs in the 1970s, these being upgraded to Tiger III standard from 1993. A story about the purchase of Honduran F-5E/F for the Chilean Air Force is frequently cited but has proven to be baseless since the Honduran Air Force still operates this type. 16 F-5Es were replaced in 2009 by 16 F-16 Fighting Falcon MLU T5. A total of 10 F-5s remain operational as of 2009. In March 2013, the Uruguayan Air Force initiated talks for procuring 12 surplus F-5 Tiger III aircraft from Chile for $80 million.
- Ethiopian Air Force first delivery in 1966 it has operated the A, B and E variants.
- Hellenic Air Force received the first 55 F-5As in 1965. In 1975, 10 aircraft were bought from Iran and later, another 10 followed from Jordan. In 1986, nine aircraft were granted from Norway and in 1991, 10 NF-5As were granted by Holland. During 1967 and 1968 this type of aircraft was used by the 3rd Hellenic Aerobatic Team "New Hellenic Flame". The last NF-5As were retired in 2002.
- Honduran Air Force The United States delivered 10 F-5E and two F-5Fs starting in 1987 as replacements of Dassault Super Mystére, which were reassigned to air strike as they were in their last years of service. The F-5 were refurbished former United States Air Force aircraft.
- Indonesian Air Force (TNI-AU or Tentara Nasional Indonesia - Angkatan Udara): Upgraded in Belgium in the middle to late 1990s. All 16 F-5E/Fs have been retired since late 2005 but are in reserve in case of future use.
- Islamic Republic of Iran Air Force: 60 to 75 F-5E and F operational; 140 originally delivered to the Imperial Iranian Air Force.
- Unknown numbers of HESA Saeqeh and HESA Azarakhsh fighters derived from the F-5 design
- Kenya Air Force: In July 2008, it was reported that Kenya will spend 1.5 billion KSh to buy 15 former Jordanian Air Force F-5s, 13 F-5E and two F-5F upgraded with Rockwell Collins avionics (plus training and spare parts).They will be added or eventually replace the current F-5 fleet
- Republic of Korea Air Force: Received a total of 340 F-5s (88 F-5A, 30 F-5B, 8 RF-5A, 126 F-5E, 20 F-5F, 48 KF-5E, and 20 KF-5F). During the Vietnam War, 36 F-5As and 8 RF-5As were transferred to the Vietnam Air Force in exchange of F-4 Phantom II from the United States Air Force. 5 RF-5As were brought back to Korea before the war ended. The last Freedom Fighter retired in 2005, and 8 F-5As were donated to the Philippines Air Force. The ROKAF plans to replace the U.S. made F-5E/Fs with 60 newly built FA-50 aircraft.
- Royal Libyan Air Force to 1969. 10 F-5s. May have been sold to Turkey after 1969.
- Mexican Air Force received 12 F-5s in 1982. The service currently operates eight F-5Es and two F-5Fs.
- Royal Moroccan Air Force operates 12 F-5A/Bs upgraded with Tiger II avionics and 24 upgraded F-5 Tiger III.
- Royal Malaysian Air Force uses 4 F-5F as trainer aircraft while another 16 of its Northrop F-5E Tiger IIs were upgraded for reconnaissance purposes.
- Royal Netherlands Air Force (former operator), received 75 [Canadair built] NF-5A (Single-seat fighter version) and 30 NF-5B (Two-seat training version) between 7 October 1969 and 20 March 1972. After the aircraft were phased out and replaced by the modern F-16 Fighting Falcon, the aircraft were initially stored at Gilze-Rijen Air Base and Woensdrecht Air Base, until finally 60 aircraft were sold to Turkey, 11 to Greece and 7 to Venezuela. Several of the remaining aircraft can be found in aviation museums and technical schools.
- No. 313 Squadron; Twente Air Base (transitioned to F-16 in 1987)
- No. 314 Squadron; Eindhoven Air Base (transitioned to F-16 in 1990)
- No. 315 Squadron, Operation Conversion Unit (OCU); Twente Air Base (transitioned to F-16 in 1986)
- No. 316 Squadron; Gilze-Rijen Air Base (transitioned to F-16 in 1991)
- Field Technic Training Unit NF-5 (1971–1984); Twente Air Base
- Royal Norwegian Air Force (former operator)
- Philippine Air Force received 19 F-5A (single seat) and three F-5B (two seat) aircraft in 1965–1967. In 1989, the PAF received three ex-Taiwanese F-5A and one F-5B. In the 1990s, at least eight ex-South Korean F-5A and two Jordanian F-5A were acquired. All F-5 upgrades were abandoned in 2008. The Philippines decommissioned its F-5A/B fleet in 2005.
- Royal Saudi Air Force: 110 F-5E/Fs withdrawn from active service aside from in the trainer role, some squadrons such as #10 based in Taif will be replaced with Eurofighter Typhoon.
- Vietnam Air Force received fleet of 158 former US, Korean, Iranian and Chinese F-5A Freedom Fighters, 10 RF-5A and eight F-5B trainers, USA also provided newer F-5E Tiger IIs, most of F-5s were evacuated to Thailand in 1975, but many were captured by People's Army.
- Spanish Air Force, operates 19 F-5Bs as trainers for fighter school.
- Sudanese Air Force: 10 F-5Es and two F-5F were delivered in 1978, One of the F-5Fs was sold to Jordan. further two F-5s defected to Sudan from Ethiopia during the Ogaden crisis.
- Swiss Air Force: Operating 42 F-5E and 12 F-5F Tiger II. The Swiss chose the F-5 because it was simpler to maintain than the F-16.
- Republic of China Air Force: Received 115 F-5A and B from 1965, 48 were transferred to South Vietnam before 1975. From 1973 to 1986, Taiwan produced 308 F-5E/Fs under license. Later batches of locally AIDC licensed production of Tiger IIs were fitted with flare/chaff dispensers, plus handling qualities upgrades with enlarged LEX and F-20's shark nose, and radar warning receivers(RWR).
- Royal Thai Air Force: F-5A retired. Now operating F-5E/F/T, F-5s from 701st Sq. retired and replaced by 12-JAS 39 Gripen. The last F-5 fleet, upgraded F-5T Tigris and F-5F will continue to serve to 2015–2020.
- Tunisian Air Force : Eight F-5E and four F-5F Tiger II were delivered in 1984–1985. The TAF received five ex-USAF F-5E in 1989. A total of 16 aircraft still in service.
- Turkish Air Force: More than 200 F-5A/Bs and NF-5A/Bs were bought from various countries. Between 40 and 50 of them were upgraded to F-5/2000 standard during the 2000s (decade). The F-5/2000 remains active of which 10 F-5A and two F-5Bs belong to the Turkish Stars aerobatic display team.
- F-5Es were received from Vietnam and the Derg regime in Ethiopia for performance tests and evaluation flights. They were tested in mock combat against MiG-21 and MiG-23 aircraft, ultimately aiding in the development of the MiG-23MLD and the MiG-29.
- United States Air Force (former operator)
- Vietnam People's Air Force (several captured ex-VNAF aircraft). One F-5E (s/n 73-00867) was transferred to the Soviet Union for evaluation flights, i.e. against the MiG-21bis; 40+ F-5E/F/C were in VNAF's service. After the Vietnam War, Vietnamese forces used the captured F-5 fleet against Chinese forces during Sino-Vietnamese War.
- Yemen Air Force: North Yemen Air Force's 14 F-5E/F fleet were initially piloted by ROCAF/Taiwan pilots as part of 115th Squadron at Sana‘a, from April 1979 to May 1990, to boost its air defense.
Aircraft on display
- 68-9071 – Athens War Museum.
- 69-132 – Hellenic Air Force Museum.
- 13-353 – Thessaloniki War Museum.
- 59-4989 – National Museum of the United States Air Force at Wright-Patterson AFB in Dayton, Ohio.
- 74-1558, later US Navy 741558 – Fort Worth Aviation Museum, Fort Worth, Texas.
- 74-1564, later US Navy/US Marine Corps 741564 – Flying Leatherneck Aviation Museum at MCAS Miramar in California.
- 66-9170 – War Remnants Museum, Ho Chi Minh City, Vietnam.
Specifications (F-5E Tiger II)
Data from Quest for Performance
- Crew: 1
- Length: 47 ft 4¾ in (14.45 m)
- Wingspan: 26 ft 8 in (8.13 m)
- Height: 13 ft 4½ in (4.08 m)
- Wing area: 186 ft² (17.28 m²)
- Airfoil: NACA 65A004.8 root, NACA 64A004.8 tip
- Empty weight: 9,558 lb (4,349 kg)
- Loaded weight: 15,745 lb (7,157 kg)
- Max. takeoff weight: 24,722 lb (11,214 kg)
- Powerplant: 2 × General Electric J85-GE-21B turbojet
- Zero-lift drag coefficient: 0.0200
- Drag area: 3.4 ft² (0.32 m²)
- Aspect ratio: 3.82
- Internal fuel: 677 U.S. gal (2,563 L)
- External fuel: 275 U.S. gal (1,040 L) per tank in up to 3 tanks
- Maximum speed: 917 kn (Mach 1.6, 1,060 mph, 1,700 km/h) ; at altitude
- Range: 760 nmi (870 mi, 1,405 km)
- Ferry range: 2,010 nmi (2,310 mi, 3,700 km)
- Service ceiling: 51,800 ft (15,800 m)
- Rate of climb: 34,400 ft/min (175 m/s)
- Lift-to-drag ratio: 10.0
- Guns: 2× 20 mm (0.787 in) M39A2 Revolver cannons in the nose, 280 rounds/gun
- Hardpoints: 7 total (only pylon stations 3, 4 and 5 are wet-plumbed): 2× wing-tip AAM launch rails, 4× under-wing & 1× under-fuselage pylon stations with a capacity of 7,000 pounds (3,200 kg) and provisions to carry combinations of:
- Rockets: ***2× LAU-61/LAU-68 rocket pods (each with 19× /7× Hydra 70 mm rockets, respectively); or
- Missiles: ***4× AIM-9 Sidewinders or 4× AIM-120 AMRAAM air-to-air missile
- Bombs: A variety of air-to-ground ordnance such as the Mark 80 series of unguided bombs (including 3 kg and 14 kg practice bombs), CBU-24/49/52/58 cluster bomb munitions, napalm bomb canisters and M129 Leaflet bomb, and laser-guided bombs of Paveway family.
- Other: ***up to 3× 150/275 U.S. gallon Sargent Fletcher drop tanks for ferry flight or extended range/loitering time.
- 2× GPU-5/A 30mm cannon pods (fitted only on Thai F-5s)
- Emerson Electric AN/APQ-153 radar on early batch of F-5E
- Emerson Electric AN/APQ-159 radar on later production F-5E
- AN/AVQ-27 Laser Target Designator Set (LTDS), for F-5B and F-5F only.
Notable appearances in media
- Related development
- Northrop T-38 Talon
- Canadair CF-5
- Grumman X-29
- HESA Saeqeh
- Northrop F-20 Tigershark
- Northrop YF-17
- SSBD Demonstrator
- Aircraft of comparable role, configuration and era
- Related lists
- The 492 F-5s in service as of December 2013 make it the 8th most common active fighter and attack jet, comprising approximately 3% of the total world tactical jet fleet.
- Of aircraft effectiveness, Sprey generally commented that: "The second most important effectiveness area, after ability to surprise, is the ability to outnumber the enemy. This dimension of effectiveness is also an inherent characteristic of the design of a fighter, since the design determines the procurement cost, the operating cost and the sorties per day."
- Sprey's relative figure of merit on cost is defined as available combat sorties/day per billion dollars invested in procurement, training, and maintenance over a 10 year peace time period. It is accurate so long as the period of conflict is short relative to 10 years.
- Defense analyst and combat aircraft architect Pierre Sprey defines the key factors of fighter effectiveness in order of importance as 1. Ability to surprise the enemy without being surprised, 2. On a per budget basis, ability to outnumber the enemy via lower unit cost and higher sortie rates and reliability, 3. Ability to outmaneuver the enemy, and 4. Once in position to fire by either surprise or maneuver, ability to attain reliable kills (weapon system effectiveness).
- "Northrop F-5 Freedom Fight." National Museum of the United States Air Force. Retrieved: 14 November 2012.
- Johnsen 2006, p. 90.
- Knaack 1978, p. 290.
- "Military Aircraft Update: Northrop F-5/T-38. Aviation Week & Space Technology (Aviation Week Intelligence Network), Volume 175, Issue 39, 21 November 2013, p. 89.
- "F-5N/F Adversary aircraft fact file." U.S. Navy. Retrieved: 15 May 2010.
- Hoyle, Craig. "World Air Forces 2014." Flightglobal.com, p. 5. Retrieved: 3 September 2014.
- Garrison, Peter. "White Rocket", Air and Space Magazine, September 2005.
- Wagner 2000, p. 195. Chapter 9 of this book is devoted to the F-5.
- Stuart 1978, pp. 5–7.
- Wagner 2000, p. 197.
- Braybrook 1982, pp. 111–114.
- Stuart 1978, p. 21.
- Garrison, Peter.[clarification needed]
- Sprey 1982, p. 130.
- Sprey 1982, p. 145.
- Paloque 2013, pp. 4–7.
- Lake and Hewson 1996, pp. 50–51.
- Braybrook 1982, p. 114.
- Lake and Hewson 1996, p. 51.
- Harding 1990, pp. 118–119, 122–123, 188–189.
- Lake and Hewson 1996, pp. 52–53.
- Lake and Hewson 1996, pp. 82–83.
- Lake and Hewson 1996, pp. 58–59, 70–71.
- Braybrook 1982, p. 116.
- Lake and Hewson 1996, pp. 71–72.
- Lake and Hewson 1996, p. 103.
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- Lake and Hewson 1996, p. 104.
- Sprey, Pierre. "Comparing the effectiveness of air-to-air fighters: F-86 to F-18", April 1982, pp. 143-145.
- Sprey 1982, pp. 97, 145.
- Sprey 1982, pp. 89, 145.
- Sprey 1982, p. 109.
- "Press release: Assets: Fighter aircraft." Ministry of Defence (Singapore), 24 April 2010. Retrieved: 8 June 2011.
- Yeo, Mike. "Tigers over Lion City." AirForces Monthly (Key Publishing), Issue 275, March 2011, pp. 86–91. ISSN 09557091. Retrieved: 8 June 2011.
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- "Denel's A-Darter makes test debut" Flight Global, 26 February 2009. Retrieved: 28 January 2012.
- "FAB comemora dia da Aviação de Caça!" (in Portuguese). alide.com.br. Retrieved: 28 January 2012.
- "F-5EM com míssil Python IV" (in Portuguese). Poder Aéreo, 4 November 2010. Retrieved: 28 January 2012.
- "As garras afiadas do F-5EM" (in Porguguse). Poder Aéreo, 24 August 2008. Retrieved: 28 January 2012.
- Lake and Hewson 1996, p. 53.
- Plunkett, W. Howard. "When the Thunderbirds Flew the Thunderchief." Air Power History, Air Force Historical Foundation, Clinton, Maryland, Fall 2009, Volume 56, Number 3, pp. 24–25.
- Thompson 1996, pp. 4–6.
- Hobson p. 43, 64, 70, 71, 73, 75, 83, 90, 268
- Thompson 1996, pp. 12, 14.
- Thompson 1996, p. 16.
- Toperczer #29 pp. 80, 81.
- "Photo of a Northrop F-5E Tiger II in Kraków, Poland a gift of the Democratic Republic of Vietnam." muzeumlotnictwa.pl. Retrieved: 15 May 2010.
- Gervasi, Arsenal of Democracy II, p. 123
- Auten, Roger Ball! p. 390
- Gillcrist, TOMCAT! p.95
- Lake (Ed.), F-14 Shipborne Superfighter, p.85
- Sprey 1972, p. 140.
- "Northrop F-5 Freedom Fighter." Great Planes episode, Discovery Channel, May 2012.
- Ted, Carlson. "One-Eleven Heaven" AirForces Monthly (Key Publishing), Issue 283, October 2011, pp. 48. ISSN 09557091. Retrieved: 10 October 2011.
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