巡航高度約11,500mで飛行 the aircraft reached its cruising height of 38,000ft at 10.45am
8分後に高度1,825mで仏管制官との交信が途絶える "The aircraft's contact with French radar, French air traffic controllers ended at 10:53am (9:57GMT) at an altitude of about 6,000 feet (approximately 1,825 metres).