How far can a 767 Glide?

It is crazy to think that based on the ratio quoted, a 767 at 30,000 ft could glide approximately 113 miles. That is an impressive distance. Especially when you consider that many people without much exposure to aviation seem to often believe an airliner will nose dive if all engine power is lost.



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For example, with a glide ratio of 15:1, a Boeing 747-200 can glide for 150 kilometres (93 mi; 81 nmi) from a cruising altitude of 10,000 metres (33,000 ft).

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That means at 35,000 feet it could travel about 100 miles. The new 787 Dreamliner is around 20:1.

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The Boeing 767-300ER is sized between the single-aisle 757 and the larger, twin-aisle 777. The 767-300 entered service in 1988 with American Airlines. Maximum range for the 767-300ER is 5,990 nautical miles (11,070 km).

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The A380 has a glide ratio of about 15:1, which means that for every 15 kilometers (9 miles) it travels horizontally, it loses 1 kilometer (0.6 miles) of altitude. Therefore, if an A380 is cruising at 12 kilometers (7 miles) above sea level, it can glide for about 180 kilometers (110 miles) before reaching the ground.

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The glide ratio of a clean A320 is 17:1 which means it can travel 17 units of distance forwards for every 1 unit of distance downward at best glide speed. Using your figure of 11,000 meters away and multiplying by 17 results in a maximum range of 187km .

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The pilots of the Airbus A330 were able to glide the aircraft to a landing at Lajes Air Base, Terceira Island in the Azores. They were able to glide for 20 minutes and 115 miles to the airport. The reported landing speed was about 200 knots indicated airspeed, higher than the normal speed of 130 to 145.

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All fixed-wing aircraft have some capability to glide with no engine power; that is, they do not fall straight down like a stone, but rather continue to glide moving horizontally while descending.

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On 15 October 2014, EASA approved the A350-900 for ETOPS 370, allowing it to fly more than six hours on one engine and making it the first airliner to be approved for ETOPS Beyond 180 minutes before entry into service.

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Techincally, there is only one way for the aircraft to remain hanging motionless in the air: if weight and lift cancel each other out perfectly, and at the same time thrust and drag cancel each other out too. But this is incredibly rare. To stay in the air and sustain its flight, an aircraft needs to be moving forward.

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On the whole, flying an A380 with the power of just one engine seems a precarious prospect. Indeed, even flying the A380 under the power of two engines is something that Federal Aviation Regulations state should only be done in extreme cases.

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