The MOCA only guarantees navigational signal coverage up to ___ miles

The MOCA only guarantees navigational signal coverage up to ___ miles

• A. 15 miles
• B. 28 miles
• C. 30 miles
• D. 22 miles

Answer: (D)

MOCA stands for Minimum Obstruction Clearance Altitude. It defines the altitude along an airway that ensures obstacle clearance, and it also indicates how far you can rely on the VOR navigation signal when flying routes defined by MOCA. The navigational signal is guaranteed only within a limited radius from the VOR, which is about 22 miles. This means you can count on VOR reception for navigation within roughly 22 miles of the station when following a MOCA-defined route. Beyond that distance, MOCA does not guarantee signal reliability, so you’d plan using other navaids or higher-layer altitudes. The other distances don’t match this guaranteed coverage radius.

MOCA stands for Minimum Obstruction Clearance Altitude. It defines the altitude along an airway that ensures obstacle clearance, and it also indicates how far you can rely on the VOR navigation signal when flying routes defined by MOCA. The navigational signal is guaranteed only within a limited radius from the VOR, which is about 22 miles. This means you can count on VOR reception for navigation within roughly 22 miles of the station when following a MOCA-defined route. Beyond that distance, MOCA does not guarantee signal reliability, so you’d plan using other navaids or higher-layer altitudes. The other distances don’t match this guaranteed coverage radius.