types of foreign object damage
Lockheed Martin Aeronautics Company 3 Foreign Objects are a major cause of aircraft damage and unscheduled maintenance. Damage can result in minor repairs or catastrophic events. Preventing FOD is everyone's responsibility. FOD includes hardware, tools, parts, metal shavings, broken hardware parts, pavement fragments, rocks, badges, hats, paper clips, rags, trash, paperwork and even wildlife. Any foreign object that can find its way into an aircraft or engine can contribute to FOD.