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Accident
Last updated: 22 October 2017
Status:Definitief
Datum:woensdag 20 april 1983
Tijd: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
Luchtvaartmaatschappij:Air Ecosse
Registratie: G-STUD
Constructienummer: 545
Bouwjaar: 1977
Aantal vlieguren:7000
Motoren: 2 Pratt & Whitney Canada PT6A-27
Bemanning:slachtoffers: 0 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 10
Totaal:slachtoffers: 0 / inzittenden: 12
Schade: Afgeschreven
Gevolgen: Written off (damaged beyond repair)
Plaats:Flotta Airport (FLH) (   Verenigd Koninkrijk)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse charter
Vliegveld van vertrek:Aberdeen-Dyce Airport (ABZ/EGPD), Verenigd Koninkrijk
Vliegveld van aankomst:Flotta Airport (FLH), Verenigd Koninkrijk
Beschrijving:
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


Veiligheidsmaatregelen

AAIB issued 2 Safety Recommendations

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Foto's

photo of de Havilland Canada DHC-6 Twin Otter 300 G-STUD
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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Aberdeen-Dyce Airport en Flotta Airport bedraagt 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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