|First flight||August 29, 1978 (as Mitsubishi Diamond)|
|Primary users||Flight Options
Travel management co.
|Number built||951 : 92 Mitsubishi MU-300, 859 Beechjet 400|
The Hawker 400 is a small twinjet corporate aircraft. Initially designed and built by Mitsubishi, it has been further developed and updated by the Beech Aircraft Company, now part of Hawker Beechcraft.
It is a small, low-winged twin-turbofan aircraft of all metal construction, flown by a crew of two pilots and accommodating eight passengers in a pressurised cabin. Its wings use a computer designed, supercritical airfoil in order to minimise drag. Its two Pratt & Whitney Canada JT15D turbofans are mounted on the rear fuselage.
Powered by JT15D-5/-5R, it can fly 1,351 nmi (2,502 km) with four passengers, cruising at Mach 0.71-0.73, and most pilots are comfortable flying it over three hours, about 1,175 nmi (2,176 km) cruising at Mach 0.73-0.76, typical missions are 1.5 to 2.0 hours with 400 kn (740 km/h) block speeds. It burns 1,500 lb (680 kg) of fuel the first hour, dropping to 1,100–1,200 lb (500–540 kg) for the second. Basic operating weights range from 11,000 to 11,100 lb (5,000 to 5,000 kg), full tanks payload is less than 500–600 lb (230–270 kg) but the average passengers are three, it can fly six passengers 1,100 nmi (2,000 km)
The aircraft was originally designed as the Mitsubishi MU-300 Diamond, an all-new, all-jet development to complement and slot above the Mitsubishi MU-2 and provide Mitsubishi Heavy Industries with their top-of-the-line corporate aircraft model (hence the name "Diamond"). It first flew on August 29, 1978. Mitsubishi went on to produce 97 MU-300s, all of which were assembled by the company's United States subsidiary.
In 1985 Mitsubishi sold the rights and a number of unfinished airframes to Beechcraft, who began manufacturing it as their own model, initially re-designated as the Beechjet 400, certificated by the Federal Aviation Administration in May 1986. Raytheon/Beechcraft developed improvements for the 1990 400A for longer range, higher take-off weights, luxury appointments and offering an all-glass flight deck.
Beechcraft developed the T-1 Jayhawk version for the United States Air Force, used as a trainer for crew of large aircraft like tankers and strategic transports: 180 were delivered between 1992 and 1997. The Japan Air Self-Defense Force 400T trainer shares the T1-A Type certificate.
In 1993 Raytheon purchased the Hawker business jets from British Aerospace, renamed the Beechjet 400 as the Hawker 400 to include it in the line and the Hawker 400XP incorporated aerodynamic, mechanical and interior improvements from the Hawker 800XP. In October 2008, Hawker Beechcraft upgraded it as the Hawker 450XP including new, more fuel efficient Pratt & Whitney PW535Ds with 2,965 pounds of thrust each but it was canceled in June 2009 due to poor economic conditions.
Nextant Aerospace re-manufactures it as the 400XT, replacing the JT15Ds with Williams FJ44s and adding new avionics and interior, it was FAA-certified in October 2011. Up to one-third of the 400A/400XP fleet could be retrofitted, enabling improved range, speed and fuel efficiency. It should keep their resale value to remain in economic service for another twenty to thirty years, like Falcon 20s reengined with TFE731s.
The type is used by many corporate and private users, it is also used by air-taxi and air charter companies.[verification needed]
In 2014 most were U.S. registered, a majority with single aircraft operators. Flight Options and Travel management co. were its largest operators as NetJets Europe has disposed of its fleet. The second highest concentration was in Mexico, then Brazil, the rest were scattered throughout the world. The USAF operated 178 T-1A Jayhawks. Charter and fractional operators fly at least 800 to 900 hours per year while most corporate operators fly 300 to 400 hours.
In 2014, 400A values range from $500,000 for mid-time 1990 models to $1.3 million for 2003 models, a 2004 Hawker 400XP commands about $1.5 million and last 2010 models were listed at least for $2.5 million.
- Mitsubishi MU-300 Diamond I
- Initial model. Two prototypes and 89 production aircraft built, 56 in active use as of 2014.
- Mitsubishi MU-300-10 Diamond II
- Improved version of Diamond I; 11 built, all subsequently redesignated as Beechjet 400s.
- Beechcraft Model 400 Beechjet
- Version of Diamond II built after Beechcraft bought the production rights to the MU-300 from Mitsubishi, 54 built in addition to 11 Diamond IIs.
- Model 400A
- Upgraded model, initially produced as the Beechcraft Beechjet 400A, then Raytheon Beechjet 400A, then Raytheon Hawker 400XP, then Hawker Beechcraft Hawker 400XP. One prototype converted from Model 400 and 593 built as of the end of 2009.
- Model 400T
- Military version of the Model 400A, 180 built for the United States Air Force as the T-1 Jayhawk and 13 built for the Japan Air Self-Defense Force. In Japanese service they are referred to as T-400.
- Hawker 400XPR
- A factory engineered and supported upgrade first flown May 2012. The conversion features new avionics, interior, winglets, and Williams FJ44-4A-32 engines. The first fully configured was delivered on July 20, 2017, the upgrade can be performed in 12 weeks with a choice of Rockwell Collins Pro Line 4 to 21 or Garmin G5000 avionics, it provides 33% more range to 2,160 nmi (4,000 km) with four passengers, better hot and high performance and a 19 min climb to FL450 at max takeoff weight.
Specifications (Beechjet 400A)
Data from Brassey's World Aircraft & Systems Directory 1999/2000
- Crew: 2 pilots
- Capacity: 7—9 passengers
- Length: 48 ft 5 in (14.76 m)
- Wingspan: 43 ft 6 in (13.26 m)
- Height: 13 ft 11 in (4.24 m)
- Wing area: 241.4 sq ft (22.43 m²)
- Empty weight: 10,050 lb (4,558 kg)
- Useful load: 5,850 lb (2,653 kg)
- Max. takeoff weight: 16,100 lb (7,303 kg)
- Powerplant: 2 × Pratt & Whitney Canada JT15D-5 turbofan, 2,900 lbf (12.9 kN) each
- Maximum speed: 468 knots (866 km/h, 539 mph) (Mach 0.78 MMO)
- Cruise speed: 443 knots (820 km/h, 510 mph) at 23,000 ft (7,000 m)
- Stall speed: 92 knots (171 km/h, 106 mph) (full flaps)
- Range: 1,693 nmi (3,135 km, 1,949 mi) at 45,000 ft (13,700 m)
- Service ceiling: 45,000 ft (13,700 m)
- Rate of climb: 3,770 ft/min (19.2 m/s)
Aircraft of comparable role, configuration and era
- Fred George (Dec 10, 2014). "Operators Survey: Beechjet 400A/Hawker 400XP/Nextant 400XT". Business & Commercial Aviation.
- "Mitsubishi MU-300 production list". rzjets.
- "Beech 400 Beechjet production list". rzjets.
- 2009 Business Aircraft Comparison Charts, Business and Commercial Aviation magazine (online version) retrieved March 19, 2010
- Taylor, John W.R. (editor). Jane's All The World's Aircraft 1988-89. Coulsdon, UK: Jane's Defence Data, 1988. ISBN 0-7106-0867-5, pp. 339–340.
- Whitaker, Richard. "Diamond 1:Mitsubishi's first business jet". Flight International, July 18, 1981, pp. 163–167.
- Mitsubishi MU-300 Diamond, airliners.net
- Field, Hugh and Hurst, Mike. "The Great St Louis Meeting". Flight International, September 30, 1978, pp. 1261–1266.
- Aviastar: Mitsubishi MU-300 / Diamond
- FAA Type Certificate Number A16SW (Hawker Beechcraft Model 400 series), Revision 25 retrieved March 19, 2010
- Hawker Beechcraft cancels 450XP jet
- "Nextant Aerospace Receives FAA Certification for the 400XT" (Press release). Nextant Aerospace. October 5, 2011.
- FAA Type Certificate Number A14SW (Mitsubishi MU-300), Revision 9 retrieved March 19, 2010
- Hoyle, Craig (October 24, 2014), "Big in Japan: Tokyo's Top 10 aircraft projects", Flightglobal, Reed Business Information
- Hawker Beechcraft aircraft Serial Number Lists 1945 to present Archived March 7, 2010, at the Wayback Machine. retrieved March 19, 2010.
- LAASdata list of Beechjet 400/Hawker 400/T-1/400T aircraft retrieved March 19, 2010. The list includes US and Japanese military variants but these have not been included in the total.
- "A Score Of New Business Aircraft Are Planned". Aviation Week & Space Technology: 68. October 14, 2013.
- Chad Trautvetter (July 20, 2017). "Textron Delivers First Fully Configured Hawker 400XPR". Aviation International News.
- Taylor, Michael J.H. (editor). Brassey's World Aircraft & Systems Directory 1999/2000. London:Brassey's, 1999. ISBN 1-85753-245-7, pp. 521—522.
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