Federal regulations require operators to notify the NTSB immediately of aviation accidents and certain incidents. An accident is defined as an occurrence associated with the operation of an aircraft that takes place between the time any person boards the 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. An incident is an occurrence other than an accident that affects or could affect the safety of operations. (See 49 CFR 830.)
Contact the nearest NTSB regional office to file a report. A phone call is sufficient initially, but a written follow-up will be required. Should you be directed to complete Form 6120.1 - "Pilot/Operator Aircraft Accident/Incident Report", please do as follows:
Should you have a question regarding which form you must use, please contact NTSB Headquarters or the NTSB regional office nearest to you.