Here is the definition of "accident" under part 830, Jeff:

"An occurrence associated with the operation of the aircraft which takes place between the time any person boards an aircraft with the intention of flight and all such persons have disembarked, and in which any person suffers death or serious injury, or in which the aircraft receives substantial damage."

Subastantial Damage means" Any damage or structural failurethat adversely affects the structural strength, performance, or flight characteristics of the aircraft and which would normally require major repair or replacement of the affected component" This DOES NOT include: Engine failure, bent fairings or cowlings, dented skin, small puncture holes, ground damage to rotor or propeller blades, any damage to landing gear, wheels, tires, flaps, engine accessories, brakes or wing tips.

A good example is that the classic gear up landing does not constitute a report to NTSB. And, by the way, accidents should be reported to NTSB, not the FAA.