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MCA

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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

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