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MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA)

Pilot/Controller Glossary with JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov

The lowest published altitude in effect between radio fixes on VOR airways, off‐airway routes, or route segments which meets obstacle clearance requirements for the entire route segment and which assures acceptable navigational signal coverage only within 25 statute (22 nautical) miles of a VOR.

Refer to 14 CFR part 91; 14 CFR part 95.

Also called MOCA.

In the 7110.65

Used in 5 paragraphs of JO 7110.65BB.

  1. 1-2-6Abbreviations
  2. 4-3-2Departure Clearances
  3. 4-5-6Minimum En Route Altitudes (MEA)
  4. 10-2-11Aircraft Bomb Threats
  5. 10-2-17Emergency Obstruction Video Map (EOVM)/Emergency Altitude Map (EAM)