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Level Bust

From SKYbrary Wiki



A level bust occurs when an aircraft fails to fly at the level to which it has been cleared, regardless of whether actual loss of separation from other aircraft or the ground results. Level busts are also known as Altitude Deviations.


A level bust is defined by EUROCONTROL as: Any unauthorised vertical deviation of more than 300 feet from an ATC flight clearance.

The full article can be read here

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