Aircraft Wiki

F.O.D. Debris.

A foreign object damage (often known as F.O.D.) is when an object that it's not related to an aircraft hits

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it and causes damage. Due to it's exclusive happenin in the ground it's almost no probable that it could cause a fatal accident, however it depends on the flying phase because if it happens during the takeoff the object can damage vital plane components and cause a fatal crash after going through the air.