1966 Felthorpe Trident crash

Crash of a Trident airliner in a pre-delivery flight in 1966 May 2011 September 2019 Felthorpe Trident crash Accident Trident 62a.jpg 1.15 A Trident identical to the accident aircraft, here photographed during a display flight y 1966 06 03 Deep stall due to pilot error Felthorpe, Norfolk, United Kingdom 52.702516 1.193228 type:event inline,title Hawker Siddeley Trident 1C Hawker Siddeley G-ARPY Hatfield Aerodrome Hatfield Aerodrome 4 4 4 0 On 3 June 1966, a newly built Hawker Siddeley Trident jetliner crashed during a pre-delivery test flight near the village of Felthorpe, Norfolk, England, killing all four crew. The aeroplane had entered a deep stall from which the crew were unable to recover. It was the first loss of a Trident aircraft.http://www.shockcone.co.uk/hs121/accident.htm Hawker Siddeley Trident Accidents Shockcone 17 August 2010 Aircraft and crew Aircraft The aircraft involved was a tri-jet Hawker Siddeley Trident 1C, registration G ARPY , that was about to be delivered to British European Airways.http://aviation-safety.net/database/record.php?id=19660603-1 G-ARPY Accident description Aviation Safety Network 17 August 2010 Crew The crew were pilots Peter Barlow and George Errington, and technicians E. Brackstone-Brown and G.W. Patterson.Middleton 1985 237 Accident flight thumb|Deep stall illustrated The aircraft was making its first flight,http://www.dehavilland.ukf.net/_DH121%20prodn%20list.txt DH121 Trident de Havilland 17 August 2010 dead https://web.archive.org/web/20110722032036/http://www.dehavilland.ukf.net/_DH121%20prodn%20list.txt 22 July 2011 which was a routine test flight to enable the aircraft's Certificate of Airworthiness to be issued.Middleton 1985 237 There were four crew on board. The aircraft took off from Hatfield Aerodrome at 16:52. Tests established that the stick shaker operated at 102 kn km/h, and that stall recovery system operated at 93 kn km/h. The crew then disconnected the stall warning systems in order to ascertain the actual margin left after the warning had been given before the aircraft stalled. On this particular flight, the aircraft was being operated with its centre of gravity towards its aft limit.Middleton 1985 237 Shortly after 18:30, the pilot reported that the aircraft was in a "superstall".Middleton 1985 237 At the time, the aircraft was observed to be configured for landing. It was at an altitude of 10000 ft m. The nose was seen to pitch up by 30 to 40° before the aircraft turned to port, followed by the starboard wing dropping. Although full power was applied, the aircraft entered into a flat spin, and crashed at Felthorpe, killing all on board. It was not fitted with an anti-spin parachute.Middleton 1985 237 The site of the accident was in a field adjacent to Felthorpe Airfield.http://www.felthorpe.net/History.html History Felthorpe Flying Group 18 August 2010 https://web.archive.org/web/20100911232316/http://www.felthorpe.net/History.html 11 September 2010 live Investigation The Accidents Investigation Branch opened an inquiry into the accident. The investigation found that accident was the result of the pilot delaying recovery manoeuvres for too long, thereby allowing the aircraft to enter a deep stall from which it was impossible to recover. See also 1963 BAC One-Eleven test crash British European Airways Flight 548 References Sources Test Pilots Middleton Don 1985 Guild Publishing London Deep Stall Disaster Flight International, 20 November 1968 p909-910 Category:Aviation accidents and incidents in 1966 Category:1966 in England Category:Aviation accidents and incidents in Norfolk Category:Aviation accidents and incidents involving the Hawker Siddeley Trident Category:20th century in Norfolk Category:June 1966 in the United Kingdom Category:1966 disasters in the United Kingdom Category:Airliner accidents and incidents caused by stalls