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The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] (1,900 km; 1,200 mi) of additional range.
At the same time, the exhaust gas temperature of the #3 engine (the inboard engine on the starboard wing) rose to 750 °C (1,380 °F), exceeding the takeoff limit of 650 °C (1,202 °F). [2] With the first officer still flying, the captain retarded the #3 engine throttle to idle, which stopped the temperature rise and aircraft vibration. [2]
The improved 747-400, featuring canted winglets, entered service in February 1989 with Northwest Airlines. The 747-400 is an improved model with increased range. It has wingtip extensions of 6 ft (1.8 m) and winglets of 6 ft (1.8 m), which improve the type's fuel efficiency by four percent compared to previous 747 versions. [179]
China Airlines Flight 006 (call sign "Dynasty 006") was a daily non-stop flight from Taipei to Los Angeles International Airport.On February 19, 1985, the Boeing 747SP operating the flight was involved in an aircraft upset accident, following the failure of the No. 4 engine, while cruising at 41,000 ft (12,500 m).
The older 747-400 was delivered in 2001, while a newer 747-8 was delivered in 2012. ... In his first term, Donald Trump renegotiated the contract with Boeing to limit costs below $4 billion.
MTOW = Maximum take-off weight, MLW = Maximum landing weight, TOR = Take-off run (SL, ... Boeing 747-400: 396,900: 295.742: 3,018: 2,179: Heavy: Heavy Lockheed C-5 ...
Minimum takeoff safety speed. [7] [8] [9] V 3: Flap retraction speed. [8] [9] V 4: Steady initial climb speed. The all engines operating take-off climb speed used to the point where acceleration to flap retraction speed is initiated. Should be attained by a gross height of 400 ft (120 m). [10] V A: Design maneuvering speed. This is the speed ...
Boeing delivered five 747s in 2022, while in 1990, the peak delivery year of the bestselling 747-400 version, Boeing delivered 70 747s. As different sections of the last 747 – the wings or ...