AIRCRAFT HAZARD AREA (AHA)
Pilot/Controller Glossary with JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov
Used by ATC to segregate air traffic from a launch vehicle, reentry vehicle, amateur rocket, jettisoned stages, hardware, or falling debris generated by failures associated with any of these activities. An AHA is designated via NOTAM as either a TFR or stationary ALTRV. Unless otherwise specified, the vertical limits of an AHA are from the surface to unlimited.
See CONTINGENCY HAZARD AREA (CHA); REFINED HAZARD AREA (RHA); TRANSITIONAL HAZARD AREA (THA).
Also called AHA.