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Accident description
Last updated: 23 October 2017
Status:Final
Date:Wednesday 20 April 1983
Time:12:00 UTC
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 310
Operator:Air Ecosse
Registration: G-STUD
C/n / msn: 545
First flight: 1977
Total airframe hrs:7000
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 10
Total:Fatalities: 0 / Occupants: 12
Airplane damage: Damaged beyond repair
Location:Flotta Airport (FLH) (   United Kingdom)
Phase: Landing (LDG)
Nature:Domestic Non Scheduled Passenger
Departure airport:Aberdeen-Dyce Airport (ABZ/EGPD), United Kingdom
Destination airport:Flotta Airport (FLH), United Kingdom
Narrative:
Strong winds were reported at Flotta as the Twin Otter approached Orkney Island. The aircraft first contacted the airport at 11:56, and was informed
that the surface wind was indicating 260deg/26 knots. The pilot accordingly elected to make a straight in approach to runway 35. The pilot preferred the cross-wind to come from his left-hand side, so that he could 'see' the left mainwheel onto the runway. The aircraft touched down left mainwheel first, then on the right mainwheel and, as the nosewheel touched, the commander selected reverse thrust from the propellers. As the aircraft touched down, the audible stall warning sounded momentarily. Shortly after reverse thrust from the propellers had been selected and achieved, the aircraft’s left wing started to rise. The captain applied full left wing down aileron and full left rudder, then cancelling reverse thrust from the right-hand propeller and increasing forward power on that engine.
However, he was still unable to prevent the left wing from rising further. The right-hand wing-tip contacted the ground, the aircraft yawed to the right and
then fell back momentarily onto the main wheels before ‘cartwheeling’ through an aerodrome boundary fence and coming to rest on its left side, with both wings detached.

Probable Cause:

PROBABLE CAUSE: "The accident was caused by a loss of control, shortly after touchdown, following a strong lateral gust which was in excess of the maximum cross-wind capability of the aircraft. The lack of accurate surface wind information at the runway threshold was a contributory factor."

Accident investigation:
cover
Investigating agency: AIB
Status: Investigation completed
Duration: 288 days (10 months)
Accident number: AAR 8/1983
Download report: Final report

Classification:
Loss of control

Follow-up / safety actions

AAIB issued 2 Safety Recommendations

Show all AD's and Safety Recommendations

Photos

photo of de Havilland Canada DHC-6 Twin Otter 300 G-STUD
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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 Aberdeen-Dyce Airport to Flotta Airport as the crow flies is 188 km (117 miles).
Accident location: Exact; deduced from official accident report.

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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