Does Boeing 777 have 4 engines?

Why doesn't a Boeing 777 have 4 engines instead of 2? . Because four turbofan-engines equates to twice as much maintenance-and-repair as two turbofan-engines . They also contain twice as many failure-points , thus engendering twice as many costly aircraft breakdowns .



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TL;DR: No. From a related answer: The Boeing 777-300ER is always equipped with General Electric GE90-115BL1 engines, while the baseline -300 can be ordered with four different engine models from General Electric, Pratt& Whitney or Rolls Royce.

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The trijet 777 was later dropped, following marketing studies that favored the 757 and 767 variants. Boeing was left with a size and range gap in its product line between the 767-300ER and the 747-400.

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“The Boeing 777's unique combination of superior range, outstanding fuel efficiency and passenger-preferred comfort has created long-range success for carriers around the world. And the 777-300ER now gives operators a perfect opportunity to extend that success.

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The 777-300ER (ER for Extended Range) is the B-market version of the 777-300. It features raked and extended wingtips, a new main landing gear, reinforced nose gear, and extra fuel tanks. The -300ER also has a strengthened fuselage, wings, empennage (tail assembly), and engine attachments.

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In the decades following their introduction, their use has gradually declined due to a variety of factors, including the approval of twin-engine jets to fly farther from diversion airports as reliability increased, and an increased emphasis on fuel efficiency.

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Therefore, the ERJ135/140/145 members of the family are among the safest airliners in history. The Airbus A340 is also one of the safest, with no fatal accidents involving any of the 380 units since its introduction in March 1993.

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According to Boeing's data, the 777-9 has a total length of 251 feet 9 inches (76.72 meters). The 747-8 is just a bit smaller at 250 feet 2 inches (76.3 meters). The 777-9 is the longest commercial aircraft ever built.

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The Boeing 777 (BA. N) jet lost altitude about one minute after departure in heavy rain, descending from 2,100 feet to about 748 feet above the water before the crew recovered from the descent.

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What makes the plane so expensive? The 777-300ER can carry 365 passengers compared with the 787-9's capacity of 280. The GE engines on the 777 model develop 62% more thrust than the 787's two engines. The plane is also longer than the Dreamliner, has a greater wingspan and a greater wing area, and is taller.

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Aircraft age is not a safety factor. However, if the aircraft is older and hasn't been refurbished properly, it may cause flyers some inconvenience such as overheating, faulty air conditioning, or faulty plumbing in the lavatory.

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Is a four-engine 747 safer than a two-engine 777? A four engine aircraft is architecturally safer than a two engine aircraft. However the 777 has a more robust design and technological pedigree than the 747. The 777 has proven to be more reliable and safer than the 747.

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