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Last updated: 27 October 2020
Status:
Datum:Dienstag 21 März 1950
Flugzeugtyp:Silhouette image of generic B170 model; specific model in this crash may look slightly different
Bristol 170 Freighter 21
Fluggesellschaft:Bristol Aeroplane Company
Kennzeichen: G-AHJJ
Werknummer: 12742
Baujahr: 1946
Besatzung:Todesopfer: 1 / Insassen: 1
Fluggäste:Todesopfer: 3 / Insassen: 3
Gesamt:Todesopfer: 4 / Insassen: 4
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:nahe Cowbridge (   Großbritannien)
Flugphase: Manövrieren (MNV)
Betriebsart:Test
Flug von:Filton Airport (FZO/EGTG), Großbritannien
Flug nach:Filton Airport (FZO/EGTG), Großbritannien
Unfallbericht:
Bristol 170 Freighter 21 had just been converted from Mk. 2A to Mk. 21 and was on its second test flight for the Certificate of Airworthiness renewal. Some 34 minutes past departure the aircraft entered a spin, crashing out of control.

Probable Cause:

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."



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This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s 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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