Pilot/Controller Glossary

AIRCRAFT HAZARD AREA (AHA)

This reproduces published FAA reference text for study. It does not replace the current official FAA publication or regulation.

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.

Retrieved from ecfr.gov on July 18, 2026.