Advance Airlines Flight 4210
|This article needs additional citations for verification. (September 2011)|
A KingAir 200 similar to the accident aircraft
|Date||February 21, 1980|
|Summary||EFTO (engine failure on take-off)|
|Aircraft type||Beechcraft King Air 200|
|Flight origin||Sydney Airport|
|Destination||Temora, New South Wales|
Advance Airlines Flight DR4210 was a scheduled passenger flight which crashed at Sydney Airport on 21 February 1980, killing all 13 people on board the Beech Beechcraft King Air 200 including a one-week old baby. After taking off on runway 25 for a scheduled flight the aircraft's left (port) engine failed and the pilot requested an emergency landing on runway 34. The plane crashed into the sea wall while attempting the emergency landing. The accident caused the greatest number of fatalities in a civil aircraft crash in Australia since MacRobertson Miller Airlines Flight 1750, a Vickers Viscount that crashed near Port Hedland in Western Australia on 31 December 1968 killing all 26 on board.
King Air VH-AAV commenced takeoff from runway 25 at 1908 hours operating as Advance Airlines flight DR4210 to Temora and Condobolin, New South Wales with a single pilot and 12 passengers on board. Almost immediately, after climbing to an altitude no more than 150 feet above ground level, the aircraft was observed to level off and enter a shallow bank to the left. The pilot contacted the control tower advising he had suffered a left engine failure and requesting an immediate return to land on runway 34. Air Traffic Control acknowledged this request and cleared the King Air to make a visual approach to the runway behind an Ansett Airlines Boeing 727 on final approach.
As VH-AAV continued to turn towards the runway, it descended to just a few feet above the water on a heading towards a sea wall enclosing the runway which stretches into Botany Bay. This manoeuvre prompted the tower controller to enquire if the approach and landing would proceed as normal. The reply from the pilot eight seconds later was "Alpha Alpha Victor negative". This was the final transmission from the aircraft. At 1909:08, the Sydney Airport crash alarm system was activated, and the preceding Ansett 727 instructed to expedite its landing roll and vacate the runway. At 1909:20 VH-AAV was cleared to land, however this clearance was not acknowledged as at 1909:22 the aircraft impacted the sea wall six feet above the waterline. The total duration of the flight was 106 seconds from brakes release to impact. Five fire fighting appliances were dispatched to the accident site and crews extinguished the fire within 10 minutes of the crash.
The initial impact disintegrated the left wing, while a section of the right wing including its engine separated from the aircraft coming to rest adjacent to the runway, while the main fuselage was engulfed in an explosion caused by fuel igniting as the wing structures separated. The main wreckage bounced over the sea wall and landed inverted on a taxiway, sliding along the ground for a distance of approximately 55 metres (180 ft). All 13 aboard the aircraft were killed in the accident which was ruled to be non-survivable.
Investigation and aftermath
The accident had a profound impact upon the community in the small country town of Temora, as all 12 passengers killed were residents of the surrounding districts. The victims included a local police officer, his wife and infant son who had been airlifted to Sydney five days before the accident as the baby had required urgent medical treatment for a respiratory condition. The family were returning home aboard flight 4210. It was revealed by the Sydney Morning Herald the day following the accident that a 13th passenger had cancelled her booking the day before the accident.
The initial accident investigation was conducted by the Air Safety Investigation Branch of the Department of Transport and was released in September 1981. While this investigation could not conclusively determine the cause of the accident, a number of conclusions were made about the events leading to the crash. These included the aircraft being over the maximum allowable weight by some 128 kilograms (282 lb) at the time of departure due to a company procedure of using standard (estimated) passenger weights, as well as an amendment to the company's Operations Manual advising pilots to use a reduced power setting for takeoff to reduce wear on the aircraft engines which was not approved by the Department of Transport. When combined with the ambient temperature of 39 °C (102 °F) and an overweight aircraft, these factors adversely affected the single pilot's workload and reduced the single engine performance of the King Air to a critical point. The investigation determined the left engine had likely failed due to water contamination found in the aircraft's fuel tanks, but source of the contamination was not established.
A board of inquiry, headed by Sir Sydney Frost, was convened on 1 December 1981, sitting over 90 days. On 27 January 1982, the board heard evidence from a former chief pilot of Advance Airlines who told the inquiry that on days when the temperature exceeded 28 °C (82 °F) (such as the day of the accident), it would be necessary to use a higher power setting than that advised in the company Operations Manual to ensure a safe takeoff, and that in his interpretation of the manual, this was quite clear. He also told the inquiry that Advance checked for water in the fuel system each time the aircraft was refuelled, when he operated the aircraft on scheduled flights the day prior to the accident, the aircraft performed "quite well". In 1983 the board of inquiry published their findings, attributing the cause of the accident to the presence of water in the fuel tank leading to the engine failure, and pilot error. The inquiry recommended that commercial aircraft operating in Australia with more than nine passengers should be operated by two pilots, which was accepted by aviation regulators.
- "13 Die In Sydney Crash". Sydney Morning Herald. 22 February 1980.
- "Ten Worst Air Crashes in Australia since 1968". Atsb.com. Retrieved 2011-09-11.
- "Aircraft Accident Investigation - Beech 200 VH-AAV Sydney (Kingsford Smith) Airport 21 February 1980". Atsb.gov. Retrieved 2012-10-15.
- "Index of Public Inquiries into Air Accidents". Airwaysmuseum.com. Retrieved 2013-09-09.
- "Crash inquiry hears evidence on takeoffs: Pilot not aware of restricton". Sydney Morning Herald. 28 January 1982.