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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.
The Trident's potential to enter a deep stall was highlighted in the crash of Trident 1C G-ARPY on 3 June 1966 near Felthorpe, Norfolk, during a test flight, with the loss of all four pilots on board.
The Trident's first version, Trident 1C, had the unusual capability of using reverse thrust prior to touchdown. The throttles could be closed in the flare and reverse idle set to open the reverser buckets.
Following a normal takeoff roll on runway 28R, the aircraft rotated 42 seconds after brakes were released and lifted off 2 seconds later at 145 knots IAS. At 63 seconds the autopilot was engaged 355 feet above the runway at 170 knots IAS; the IAS speed lock was selected shortly thereafter.
The plane struck two parked BEA HS-121 Trident aircraft, burst into flames, rolled on its back and came to rest against the ground floor of the terminal building. Trident G-ARPT (msn 2121) was damaged beyond repair; G-ARPI had its fin and tailplane destroyed but was repaired.
The HS-121 Trident taxied to runway 28R for takeoff. At 16:06:53 the crew reported ready for takeoff. Takeoff clearance was given and at 16:08:30 the brakes were released.
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.
