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Accident
Last updated: 22 October 2017
Status:Definitief
Datum:zaterdag 5 maart 1966
Tijd:14:15
Type:Silhouette image of generic B704 model; specific model in this crash may look slightly different
Boeing 707-436
Luchtvaartmaatschappij:British Overseas Airways Corporation - BOAC
Registratie: G-APFE
Constructienummer: 17706/113
Bouwjaar: 1960
Aantal vlieguren:19523
Aantal vluchten:6744
Motoren: 4 Rolls-Royce Conway 508
Bemanning:slachtoffers: 11 / inzittenden: 11
Passagiers:slachtoffers: 113 / inzittenden: 113
Totaal:slachtoffers: 124 / inzittenden: 124
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Mount Fuji (   Japan)
Fase: Kruisvlucht (ENR)
Soort vlucht:Internationale lijnvlucht
Vliegveld van vertrek:Tokyo-Haneda Airport (HND/RJTT), Japan
Vliegveld van aankomst:Hong Kong-Kai Tak International Airport (HKG/VHHH), Hong Kong
Vluchtnummer: 911
Beschrijving:
BOAC Flight 911 was a scheduled service from San Francisco (SFO) to Hong Kong (HKG) via Honolulu (HNL) and Tokyo (HND). The Boeing 707 was expected to arrive at Tokyo Airport at 16:45 on 4 March. However, due to poor meteorological conditions at Tokyo and because the precision approach radar (PAR) of the GCA was out of service, it diverted to Fukuoka (FUK) and landed there at 18:00. After staying overnight at Fukuoka, Flight 911 left for Tokyo at 11:25 and landed there at 12:43. The aircraft was prepared for the next leg to Hong Kong and a flight plan was filed for a flight in accordance with the instrument flight rules via Oshima on airway JG6 to Hong Kong at FL310.
At 13:42 hours the crew contacted ATC requesting permission to start the engines and clearance for a VMC climb via Fuji-Rebel-Kushimoto. The aircraft left the ramp at 13:50. It was instructed to make "a right turn after take off", and departed Tokyo Airport at 13:58. After takeoff the aircraft flew over Gotemba City on a heading of approximately 298 deg at an altitude of approximately 4900 m and indicated airspeed of 320 to 370 knots. The aircraft, trailing white vapor, then suddenly lost altitude over the Takigahara area, and parts of the aircraft began to break away over Tsuchiyadai and Ichirimatsu. Finally over Tarobo at an altitude of approx. 2000 m, the forward fuselage broke away. The mid-aft fuselage together with the wing, making a slow flat spin to the right, crashed into a forest at the foot of Mount Fuji. The forward fuselage crashed into the forest approx. 300 m to the west of the above site and caught fire.

Probable Cause:

PROBABLE CAUSE: "The aircraft suddenly encountered abnormally severe turbulence over Gotemba City which imposed a gust load considerably in excess of the design limit."

Bronnen:
» ICAO Aircraft Accident Digest No.16 - Volume II, Circular 82-AN/69 (35-55)


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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 Tokyo-Haneda Airport en Hong Kong-Kai Tak International Airport bedraagt 2859 km (1787 miles).
Accident location: Exact; as reported in the 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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