NMACs, formerly called near-misses, are defined by the FAA as "an incident associated with the operation of an aircraft in which a possibility of collision occurs as a result of proximity of less ...

The fatal D.C. plane crash has renewed focus on the recent history of crashes and near misses in U.S. airspace.

A horrifying near-miss between a passenger plane and helicopter in Washington DC reportedly took place just 24 hours before ...