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Published: 2020-03-06 07:38:21 +0000 UTC; Views: 1331; Favourites: 4; Downloads: 0
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BOAC Flight 911 (callsign 'Speedbird 911') was a round-the-world flight operated by the British Overseas Airways Corporation that crashed near Mount Fuji in Japan on 5 March 1966, with the loss of all 113 passengers and 11 crew members. The Boeing 707 jetliner involved disintegrated mid-air shortly after departing from Tokyo, as a result of severe clear-air turbulence .
It was the third fatal passenger airline accident in Tokyo in a month, following the crash of All Nippon Airways Flight 60 on 4 February and that of Canadian Pacific Air Lines Flight 402 just the day before.
The aircraft (registration G-APFE)[2] arrived at Tokyo Haneda Airport at 12:40 on the day of the accident from Fukuoka Airport , where it had diverted the previous day due to conditions on the ground in Tokyo.[3] The weather there had since improved behind a cold front with a steep pressure gradient bringing cool dry air from the Asian mainland on a strong west-northwest flow, with crystal-clear sky conditions.
For the next Tokyo–Hong Kong segment, the crew received a weather briefing from a company representative, and filed an instrument flight rules (IFR) flight plan calling for a southbound departure from Haneda via the island of Izu Ōshima , then on airway JG6 to Hong Kong at flight level 310 (31,000 feet).[3] The Boeing was commanded by captain Bernard Dobson, 45, from Dorset , described as a very experienced 707 pilot who had been flying the type since 1960.[1]
At 13:42 the crew contacted air traffic control requesting permission to start the engines, and amending their clearance request to a visual meteorological conditions (VMC) climb westbound via the Fuji-Rebel-Kushimoto waypoints, which would take them nearer to Mount Fuji, possibly to give the passengers a better view of the landmark.[4]
The aircraft began taxiing at 13:50 and took off into the northwest wind at 13:58. After takeoff, the aircraft made a continuous climbing right turn over Tokyo Bay , and rolled out on a southwest heading, passing north of Odawara .[5] It then turned right again toward the mountain, flying over Gotemba on a heading of approximately 298°, at an indicated airspeed of 320 to 370 knots , and an altitude of approximately 4,900 m (16,000 ft), well above the 3,776 m (12,388 ft) mountain peak.[3] The aircraft then encountered strong turbulence, causing it to break up in flight and crash into a forest.
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