Near Midair Collision (NMAC) reporting provides information for use in enhancing the safety and efficiency of the National Airspace System
Data obtained from NMAC reports are used by the FAA to improve the quality of FAA services to users and to develop programs, policies, and procedures aimed at the reduction of NMAC occurrences
A near midair collision is defined as any incident associated with the operation of an aircraft in which a possibility of collision occurs as a result of proximity of less than 500' to an other aircraft, or a report is received from a pilot or a flight crew member stating that a collision hazard existed between two or more aircraft
Responsibility of the pilots to determine whether a near midair collision did actually occur, and if so, initiate a report
Pilots must state clearly "I wish to report a near midair collision"
Where to File Reports:
Pilots and/or flight crew members involved in NMAC occurrences are urged to report each incident immediately:
By radio or telephone to the nearest FAA ATC facility or FSS