Accident description
Last updated: 23 November 2014
Status:
Date:Saturday 7 December 1957
Type:Scottish Aviation Twin Pioneer 1
Operator:Scottish Airlines
Registration: G-AOEO
C/n / msn: 503
First flight: 1956-08-26 (1 year 3 months)
Total airframe hrs:564
Engines: 2 Alvis Leonides 514
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 4 / Occupants: 4
Total:Fatalities: 6 / Occupants: 6
Airplane damage: Damaged beyond repair
Location:Fezzan (   Libya) show on map
Phase: Unknown (UNK)
Nature:Demonstration
Departure airport:Atshan Airstrip, Libya
Destination airport:Tripoli-Idris Airport (TIP/HLLT), Libya
Narrative:
The Twin Pioneer aircraft, operated by the manufacturer, had performed a local flight at the Atshan Esso Petroleum camp when it took off at 14:27 for an expected 3,5 hour flight back to Idris. The aircraft did not arrive at its destination and was found to have crashed 285 miles SSW of Tripoli. The outer panel of the left hand wing was found 1200 yds from the main wreckage.

PROBABLE CAUSE: "The failure in fatigue of the forward tube of the "V brace" structure in the outer panel of the port wing. This failure led to the breaking away of the outer panel of the port wing from the aircraft in flight. The aircraft was then rendered completely uncontrollable and dived vertically to the ground."

Classification:
Wing failure
Loss of control

Sources:
» ICAO Accident Digest No.9, Circular 56-AN/51 (240-244)


Photos

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V-Brace strut diagram
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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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