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Status: Accident investigation report completed and information captured
Date:Thursday 24 November 1994
Time:00:01
Type:Silhouette image of generic DHC6 model; specific model in this crash may look slightly different
de Havilland Canada DHC-6 Twin Otter 300
Operator:Kenn Borek Air
Registration: C-GKBD
MSN: 314
First flight: 1971
Engines: 2 Pratt & Whitney Canada PT6A-27
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 2 / Occupants: 2
Total:Fatalities: 4 / Occupants: 4
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:Rothera Research Station (   Antarctica)
Phase: Takeoff (TOF)
Nature:Ferry/positioning
Departure airport:Rothera Research Station (EGAR), Antarctica
Destination airport:Terra Nova Bay-Zucchelli Station, Antarctica
Narrative:
The aircraft, which was based at Calgary, Canada, had been chartered to carry out a Radio Echo Survey task for the Italian National Antarctic Programme and the accident occurred during the ferry flight, as the aircraft took off from Rothera, a UK base on Adelaide Island, and struck an iceberg which was situated just off the end of the runway in use. The aircraft was fItted with two ferry fuel
tanks in the fuselage and there were two pilots, an aircraft engineer and a technical adviser aboard.
The aircraft was destroyed by a post-impact fire.

There was no evidence to show that any weight and balance calculations had been made for the accident flight. The 'approved' Flight Manual MTOW for this aircraft was 12,500 lb and it was operating more than 6,000 lb over that weight. However, the operating company (incorrectly) believed that it was permissible to operate under the Supplement 14 dispensation, which allowed an
MTOW of 17,500 lb, but the aircraft was more than 1,000 lb above that limit as well.
The aircraft needed a 408 m ground run before becoming airborne. The pilot had been advised to fly round the side of an iceberg that was positioned 517 meters past the runway end. Instead, the pilot continued straight ahead in an attempt to climb over the iceberg. The aircraft was seen to roll from side to side just prior to the stall which occurred at a height which was insufficient to allow recovery before striking the iceberg.

Accident investigation:
Investigating agency: AAIB
Status: Investigation completed
Accident number: EW/B94/11/1
Download report: Final report
Language: 

Classification:
Overloaded
Loss of control

Sources:
» Air Safety Week 27 February 1995 (p. 5)
» ICAO Adrep Summary 1/95
» Scramble 188
» Scramble 189
» Scramble 190(47)


Photos

photo of DHC-6-Twin-Otter-300-HK-3538X
accident date: 24-11-1994
type: de Havilland Canada DHC-6 Twin Otter 300
registration: HK-3538X
 

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 Rothera Research Station to Terra Nova Bay-Zucchelli Station as the crow flies is 3765 km (2353 miles).
Accident location: Approximate; accuracy within a few kilometers.

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.
languages: languages

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