page_title: British Overseas Airways Corporation
section_title: Introduction of jets
hierarchical_section_title: British Overseas Airways Corporation / History / Introduction of jets
caption_attribution_description: English: De Havilland 106 Comet 4 G-APDG of BOAC at Manchester Airport in 1963
context_page_description: British Overseas Airways Corporation was the British state-owned airline created in 1939 by the merger of Imperial Airways and British Airways Ltd. It continued operating overseas services throughout World War II. After the passing of the Civil Aviation Act 1946, European and South American services passed to two further state-owned airlines, British European Airways and British South American Airways. BOAC absorbed BSAA in 1949, but BEA continued to operate British domestic and European routes for the next quarter century. A 1971 Act of Parliament merged BOAC and BEA, effective 31 March 1974, forming today's British Airways.
context_section_description: In May 1952 BOAC was the first airline to introduce a passenger jet into airline service. This was the de Havilland Comet which flew via Nairobi to Johannesburg and via the Far East to Tokyo. All Comet 1 aircraft were grounded in April 1954 after four Comets crashed, the second last being a BOAC aircraft at altitude. Examination of the wreckage recovered from the Mediterranean sea-bed and observation of a sample fuselage in a pressurisation test-tank at Farnborough revealed that the repeated pressurisation / depressurisation cycles of airline operation could cause fatigue cracks in the thin aluminium alloy skin of the Comet leading to the skins ripping away explosively at altitude and disintegration of the aircraft.
  Later jet airliners including the revised Comet 4 were designed to be fail-safe: in the event of, for example, a skin-failure due to cracking the damage would be localised and not catastrophic. In October 1958 BOAC operated the first transatlantic jet service with the larger and longer-range Comet 4. In the 1950s turbine powered airliners were developing rapidly, and the Comet and the seriously delayed Bristol Britannia were soon rendered obsolescent by the flight of the swept-wing Boeing 367–80 (707 prototype) in 1954.
  In 1953 Vickers had started building the swept wing VC-7/V-1000 with Rolls-Royce Conway turbofan engines, but BOAC short-sightedly decided the Britannia and Comet 4 would be adequate for its purposes, and when the military version of the V-1000 was cancelled in 1955 the 75% complete prototype was scrapped. In October 1956 BOAC ordered 15 Boeing 707s with Conway engines (briefly the most economical commercial engine option). They entered service in 1960. (The British airworthiness authorities insisted on tail-fin modifications which Boeing made available to all 707 users.) Sir Giles Guthrie, who took charge of BOAC in 1964, preferred Boeing aircraft for economic reasons, and indeed BOAC began turning a profit in the late 1960s. After a row in Parliament the government instructed BOAC to purchase 17 Vickers VC10 aircraft from a 30-aircraft order which Guthrie had cancelled. The Standard VC10 had higher operating costs than the 707, largely due to BOAC's requirement at the design stage for the aircraft to have excellent hot and high performance for Commonwealth (African/Asian) routes, but the larger Super VC10 was a success with American passengers on the North Atlantic and was profitable.
  The next major order of Boeing aircraft was for 11 747-100s. On 22 April 1970 BOAC received its first 747, but the aircraft did not enter commercial service until 14 April 1971 due to BOAC's inability to settle crewing and pay rates with the British Air Line Pilots' Association. BOAC's successor British Airways later became the largest Boeing customer outside North America.
caption: BOAC Comet 4 in 1963.
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