MOCA stands for which of the following?

MOCA stands for which of the following?

• A. Maximum Obstruction Clearance Altitude
• B. Minimum Obstruction Clearance Altitude
• C. Minimum Obstacle Clearance Altitude
• D. Maximum Obstacle Clearance Altitude

Answer: (B)

In IFR flight planning, you need an altitude that guarantees obstacle clearance along the route. MOCA stands for Minimum Obstacle Clearance Altitude. It is the lowest published altitude that ensures at least 1000 ft of obstacle clearance for the enroute segment between navigation aids, with the important caveat that reliable VOR reception is guaranteed only within about 100 NM of the VOR. Beyond that distance, you can’t depend on the VOR for navigation signals, even though the altitude still provides obstacle clearance along the segment. This differs from the Minimum Enroute Altitude, which guarantees both obstacle clearance and navigation signal reception over the entire route segment.

In IFR flight planning, you need an altitude that guarantees obstacle clearance along the route. MOCA stands for Minimum Obstacle Clearance Altitude. It is the lowest published altitude that ensures at least 1000 ft of obstacle clearance for the enroute segment between navigation aids, with the important caveat that reliable VOR reception is guaranteed only within about 100 NM of the VOR. Beyond that distance, you can’t depend on the VOR for navigation signals, even though the altitude still provides obstacle clearance along the segment. This differs from the Minimum Enroute Altitude, which guarantees both obstacle clearance and navigation signal reception over the entire route segment.