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In 1947 Derry joined de Havilland as a test pilot, working largely on the de Havilland DH 108 aircraft. He is widely believed to have exceeded the speed of sound on 6 September 1948, when he lost control of his aircraft and the Mach meter supposedly 'briefly showed' supersonic speeds in a shallow dive from 12,195 m (40,000 ft) to 9,145 m (30,000 ft).
When John de Haviland was born on 3 October 1486, in Saint Martin, Guernsey, his father, James Haviland, was 30 and his mother, Lady Helene de Beauvoir, was 32. He married Helena de Beauvois in 1520, in Blandford Forum, Dorset, England, United Kingdom. He died on 14 October 1540, in Blandford Forum, Dorset, England, United Kingdom, at the age ...
John Anthony De Havilland, British bank executive. Member of National Rifle Association (captain English VIII since 1979, winner open long range rifle championship 1963, 1968-1970, 1981-1982, 1984, 1986-1987), Army and Navy Club (London).
According to de Havilland's chief test pilot John Cunningham, who had flown the prototype's first flight, representatives from American manufacturers such as Boeing and Douglas privately disclosed that if de Havilland had not experienced the Comet's pressurisation problems first, it would have happened to them.
28 de abr. de 2022 · John de Havilland (17 October 1918 – 23 August 1943) was a British test pilot. John and his brothers, Geoffrey de Havilland Jr. and Peter, were sons of Geoffrey de Havilland, the famous designer and manufacturer. All three brothers were pilots and flew as test pilots for the de Havilland company. John had been a sergeant in the Royal Air ...
John de Havilland (Q76167265) From Wikidata. Jump to navigation Jump to search (1706-1770) edit. Language Label Description Also known as; English: John de Havilland ...
John de Havilland. John de Havilland may refer to: John de Havilland (officer of arms) (1826–1886), officer of arms at the College of Arms in London. John de Havilland (pilot) (1918–1943), British test pilot. This disambiguation page lists articles about people with the same name.
