Enroute Map Practice Test

Which statement about MOCA is true?

MOCA is always active at all altitude. MOCA is never shown on enroute charts. If MOCA is listed next to the altitude, MOCA applies; otherwise only MEA. MOCA is the same as MEA.

Correct Answer:

If MOCA is listed next to the altitude, MOCA applies; otherwise only MEA.

Explanation:

MOCA stands for Minimum Obstacle Clearance Altitude. On IFR enroute charts, MOCA provides obstacle clearance for the route segment, but only within 100 nautical miles of a VOR, and it often appears next to the altitude with a marker (star) to show this special status. The crucial point is that you only apply MOCA if it is listed beside the altitude on the chart. If MOCA is shown, that altitude is the MOCA for that segment; if MOCA isn’t shown, the published altitude is MEA, which provides obstacle clearance and navigational signal coverage for the entire segment. So the true statement is that MOCA applies when it’s listed next to the altitude; otherwise you rely on MEA.

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