Do jets dump fuel in the air?

It would seem strange that pilots would purposefully dump fuel from their aircraft at a time when fuel prices have skyrocketed. What's more bizarre is that they do it in the air while flying. Tossing fuel into the air is a safe procedure for a good reason. Additionally, it is not as wasteful as it seems.



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Fuel dumping (or a fuel jettison) is a procedure used by aircraft in certain emergency situations before a return to the airport shortly after takeoff, or before landing short of the intended destination (emergency landing) to reduce the aircraft's weight.

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Fuel disposal through dumping is a measure reserved for situations where no alternatives remain feasible. Unless a flight has a severe problem or a medical emergency that requires the plane to land immediately, the pilots would rather keep flying in circles to burn off fuel rather than dump it.

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A pilot will choose to dump fuel only on very rare occasions. Brickhouse: Unless you have a medical emergency on board, someone is dying, you don't really have time to fly around and burn fuel. So, in that case that's when you would dump fuel so that you can lose weight quickly.

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The reason to dump fuel is simple: to drop weight. Any given aircraft has a Maximum Landing Weight (MLW) at which it can land, and in most cases that weight is lower than its Maximum Takeoff Weight (MTOW).

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Area and flight level Specific areas have been designated where fuel dumping is allowed to avoid damage or harm where the fuel may drop; generally speaking, this is above seas or unpopulated areas above land.

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The maximum landing weight (MLW) is the maximum aircraft gross weight due to design or operational limitations at which an aircraft is permitted to land. The MLW is set in order to ensure safe landings; if an aircraft weighs too heavy during touchdown, it may suffer structural damage or even break apart upon landing.

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With today's fuel prices, it costs about $450,000 to fill up a Boeing 747, depending on your market. By contrast, the Gulfstream G280, a popular business aviation aircraft, costs around $8,000 to fill.

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Therefore, Boeing's general recommendation is to jettison fuel above 5,000 to 6,000 feet whenever possible, although there is no restriction on jettisoning at lower altitudes if considered necessary by the flight crew.

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When an airplane experiences less drag, it consumes less fuel. This relationship between speed and fuel consumption means that flying at a slightly slower speed can result in significant fuel savings for airlines, which in turn can lower operating costs and potentially reduce ticket prices for passengers.

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Fighter jets are equipped with an automatic recovery system called Auto-GCAS4 (Automatic Ground Collision Avoidance System). This system determines if a collision is probable based on trajectory and speed.

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Fatigue is particularly prevalent among pilots because of unpredictable work hours, long duty periods, circadian disruption, and insufficient sleep. These factors can occur together to produce a combination of sleep deprivation, circadian rhythm effects, and 'time-on task' fatigue.

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For pilots, fatigue can be a serious flight hazard, resulting in loss of situational awareness, poor decision making, and even falling asleep at the controls. Part of the reason fatigue is so dangerous is that a pilot might not even realize he's fatigued until major errors have been made.

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