Airspace utilization under prescribed conditions normally employed for the mass movement of aircraft or other special user requirements which cannot otherwise be accomplished. ALTRVs are approved by the appropriate FAA facility. ALTRVs must be classified as either “moving” or “stationary.”
Listed in the Pilot/Controller Glossary as a cross-reference to ALTITUDE RESERVATION (ALTRV), whose text is shown above.
Source FAA Pilot/Controller Glossary · checked 2026-08-25