Aviation accident involving the Hawker Siddeley Trident G-ARPY
| Aviation accident involving the Hawker Siddeley Trident G-ARPY | |
|---|---|
 Identical Trident 1C from BEA |
|
| Accident summary | |
| Accident type | Loss of control through deep stall |
| place | 1 mile south-southwest of Felthorpe , United Kingdom |
| date | 3rd June 1966 |
| Fatalities | 4th |
| Survivors | 0 |
| Aircraft | |
| Aircraft type | Hawker Siddeley HS-121 Trident 1C |
| operator | Hawker Siddeley |
| Mark | G-ARPY |
| Departure airport | Hatfield Airport |
| Destination airport | Hatfield Airport |
| Passengers | 0 |
| crew | 4th |
| Lists of aviation accidents | |
On June 3, 1966, a Hawker Siddeley Trident crashed during a test flight conducted by the manufacturer Hawker Siddeley near Felthorpe , killing all four occupants.
plane
The aircraft involved was a Hawker Siddeley HS-121 Trident 1C with the air vehicle registration G-ARPY which with three engines of the type Rolls-Royce Spey equipped 505-5. The aircraft also took off for the first flight with the test flight.
crew
The crew consisted of the flight captain Peter Barlow, who had passed 2,195 stall tests , the first officer George BS Errington, the flight engineer E. Brackstone Brown and the navigator CW Patterson.
course
The aircraft took off from Hatfield Airport at 4:52 p.m. on a test flight. At 18:30, after the bulk of the testing was done, a test series was to stall begun. The first three tests were performed to check the stall warning and protection systems (stick shaker and stick pusher), with the stick pusher having terminated the stall in each case . The flight engineer’s notes showed that while the aircraft was flying with landing configuration, the stick shaker activated at a speed of 102 kn (189 km / h ) and the stick pusher at a speed of 93 kn (172 km / h). The fourth test was carried out, also with the landing configuration, at 11600 ft (3535 m ) altitude, but this time, in accordance with the test plan, with the stick shaker and stick pusher deactivated. The speed fell rapidly, the aircraft nose first lowered, but then it pulled up and the aircraft reached a vertical inclination between 30 ° and 40 °, it came to a deep stall and the aircraft got into a flat spin , although the pilots gave maximum engine thrust to the right, spinning on itself every 6-8 seconds. In the meantime, the captain made radio contact and announced that they were in the Deep Stable. The plane finally hit 90 seconds later at 6:35 p.m. 1.6 km south-southwest of Felthorpe . All four inmates died.
root cause
Based on the wreck, it could be determined that the landing gear and the landing flaps were retracted during the impact .
The main cause was the failure of the pilots to manually lower the aircraft nose fast enough to prevent a deep stall, which, once entered, could occur without aids such as B. a special anti-spin parachute , is practically non-divertible. However, the aircraft was not equipped with such a parachute.
Similar cases
- On British Aircraft Corporation Flight 53 , a BAC 1-11 crashed under similar circumstances.
- On Bombardier Aerospace Flight 388 , a Bombardier CRJ-100 crashed under similar circumstances.
swell
- Aircraft Accident data and report G-ARPY the Aviation Safety Network (English)
- Newspaper article about the accident 1
- Newspaper article about the accident 2
- Newspaper article about the accident 3
- List of accidents in which Hawker Siddeley Trident aircraft were involved
- Description of the G-ARPY aircraft
- Article about the accident with pictures from the crash site
- Description of the first officer
- Don Middleton: Test Pilots. Guild Publishing, London 1985, ISBN 0-00-218098-7 .
- Excerpts from a book about misfortune
Coordinates: 52 ° 42 ′ 9.1 ″ N , 1 ° 11 ′ 35.6 ″ E