What kind of debris can be classified as FOD?

Foreign Object Debris (FOD) includes any material that has the potential to cause damage to an aircraft, particularly to its engines. The correct answer encompasses a broad range of materials, not limited to a specific type, such as metal, plastic, or paper. FOD can include items like tools, stones, metal shards, and even organic materials that might disrupt the operations of aircraft.

FOD is a significant concern because it poses a serious safety risk to aircraft, especially during takeoff and landing phases when they are most vulnerable. By defining FOD as "any material that can damage an aircraft engine," it highlights the importance of vigilance and regular inspection of runways and surrounding areas to ensure that all potential hazards are cleared, regardless of the material classification.