Accident description
Last updated: 17 December 2014
Status:
Date:Tuesday 21 March 1950
Type:Bristol 170 Freighter 21
Operator:Bristol Aeroplane Company
Registration: G-AHJJ
C/n / msn: 12742
First flight: 1946
Crew:Fatalities: 1 / Occupants: 1
Passengers:Fatalities: 3 / Occupants: 3
Total:Fatalities: 4 / Occupants: 4
Airplane damage: Damaged beyond repair
Location:near Cowbridge (   United Kingdom) show on map
Phase: Maneuvering (MNV)
Nature:Test
Departure airport:Filton Airport (FZO/EGTG), United Kingdom
Destination airport:Filton Airport (FZO/EGTG), United Kingdom
Narrative:
Bristol 170 Freighter 21 had just been converted from Mk. 2A to Mk. 21 and was on its 2nd test flight for the Certificate of Airworthiness renewal. Some 34 minutes past departure the aircraft entered a spin, crashing out of control.

PROBABLE CAUSE: "The accident is a result of a structural failure of the fuselage stern frame to which the fin is attached and must be attributed to the application on the fin and rudder of a load greater than the design ultimate load. Calculations suggest that the cause of this overloading was excessive rudder movement at a speed greater than 120 knots EAS."

Classification:
Tail failure
Loss of control

Sources:


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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Filton Airport to Filton Airport as the crow flies is 0 km (0 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Networkĺs opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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