MINIMUM CROSSING ALTITUDE (MCA)

The lowest altitude at certain fixes at which an aircraft must cross when proceeding in the direction of a higher minimum en route IFR altitude (MEA).

Listed in the Pilot/Controller Glossary as a cross-reference to MINIMUM CROSSING ALTITUDE (MCA), whose text is shown above.

Source FAA Pilot/Controller Glossary↗ · checked 2026-08-25