MOCA stands for

MOCA stands for

• A. Minimum Obstruction Control Altitude
• B. Minimum Obstruction Clearance Altitude
• C. Maximum Obstruction Clearance Altitude
• D. Minimum Operational Clearance Altitude

Answer: (B)

MOCA stands for Minimum Obstruction Clearance Altitude. This altitude is the lowest published altitude on an IFR route segment that guarantees obstacle clearance along the route within the area served by a VOR. A key point is that VOR reception (navigation signal) is guaranteed only within 25 nautical miles of the VOR; beyond that distance, you may not have reliable signal guidance even though obstacle clearance is defined by the MOCA. On charts, MOCA is often marked with a star to note this 25 NM signal limitation. This is why MOCA is the best choice here: it reflects the specific meaning of the term used for obstacle clearance with a VOR reference.

MOCA stands for Minimum Obstruction Clearance Altitude. This altitude is the lowest published altitude on an IFR route segment that guarantees obstacle clearance along the route within the area served by a VOR. A key point is that VOR reception (navigation signal) is guaranteed only within 25 nautical miles of the VOR; beyond that distance, you may not have reliable signal guidance even though obstacle clearance is defined by the MOCA. On charts, MOCA is often marked with a star to note this 25 NM signal limitation. This is why MOCA is the best choice here: it reflects the specific meaning of the term used for obstacle clearance with a VOR reference.