Foreign Object Debris (FOD) Tutorial

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What is FOD?
FOD is an acronym that has multiple meanings:
1) FOD - Foreign Object Debris
2) FOD - Foreign Object Damage

Foreign Object Debris is a substance, debris or any item that may cause harm to a system [1]. It is leftover material in the vicinity of an area or system that has the potential to produce negative effects if not properly removed.

Proactive actions should be taken to ensure FOD does not exist in a system

Foreign Object Damage is the damage that is attributed to foreign object debris.