مؤكدالثقة بالتاريخ: مؤكدمذكور على أنه قطعيمدى حزم المصدر في صياغة التاريخ: مؤكد أو مجدول أو تقديري أو متأخر أو غير موثّق.عرض كل الدبابيس: مؤكدثقة 83%الثقة الإجمالية: 83%مدى دعم مصدر الدبوس ومراجعه لتواريخه.متوسط مرجّح لمدى قوة دعم 5 مراجع، بما فيها المصدر، لوقتَي بدء الدبوس وانتهائه؛ ويقل وزن المرجع إلى النصف عن كل 180 يومًا يسبق بها أحدث مرجععرض كل الدبابيس بثقة 75% أو أعلى
HeraldNet's[1] Boeing timeline lists '1981, September 26: First flight of the 767. The 757 follows five months later.' and Wikipedia[2] gives the same date; Flight's milestone list shows 'First flight' for September 1981.Boeing 767-200 Prototype Makes Its First Flight
The first Boeing 767-200, N767BA, flew for the first time on 26 September 1981 from Everett, Washington, seven weeks after its rollout. It began a ten-month flight-test program that used the first six aircraft built.
- The first 767-200 (N767BA, powered by Pratt & Whitney JT9D engines) took off for its maiden flight on Saturday 26 September 1981, five months before the 757[1][2]
- It had been rolled out at Everett on 4 August 1981 with 173 firm orders from 17 customers, including Air Canada, All Nippon Airways, Britannia, Transbrasil and TWA[2]
- The flight-test program ran ten months and used the first six airplanes; United Airlines received its first airplane in August 1982[2]
- Flight's program chart shows the CF6-80A engine certified the same month as the first flight, with the first CF6-powered 767 flying in February 1982[3]
- By early 1982 Boeing had cut 767 testing to a five-day week, which test director Lew Wallick said showed confidence in the program; he compared the handling to a "large 737"[4]
Notable features
- 767-200: length 159 ft 2 in (48.51 m), wingspan 156 ft 1 in (47.57 m), wing area 3,050 sq ft (283.3 m2) with 31.5 degrees of sweep[2]
- MTOW 315,000 lb (142.9 t) for the production -200; 216 two-class seats in Boeing's airport-planning layout, 255 maximum[2][5]
- Range 3,900 nmi (7,200 km) with 216 passengers; engines of 48,000 to 52,500 lbf each[2]
- Seven-abreast 2-3-2 economy cabin and a two-crew glass cockpit shared with the 757[2]
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