Description: This report discusses the minimum separation distance in a near midair collision report which the event must meet in order to be classified a "near miss." If a pilot of flight crew member subjectively believes that the near miss occurred, the report of that event is accepted by the Federal Aviation Administration (FAA) and counts as a near miss in the FAA data base regardless of the actual separation distance. While no proximity limits are placed on near midair collision reports, the agency does attempt to categorize each reported encounter by degree of hazard represented from an aviation safety perspective.