How are CBM T-6 MOAs defined, and what navigation references should be used?

• A. Defined by GPS points; use ground references to the maximum extent practical
• B. Defined by pilot's visual landmarks only
• C. Defined by altitude bands
• D. Defined by the flight plan route only

Answer: (C)

MOAs are defined by their vertical extent within a specific lateral boundary—the floor and ceiling that set the altitude range where the MOA exists. That vertical definition is what makes the airspace usable or restricted for training and operations. When navigating, rely on the published MOA boundaries and their floor/ceiling as shown on official aeronautical charts (sectionals or IFR enroute charts) and determine your position relative to those limits using your navigation aids (GPS, VOR/DME, etc.). The other ideas—being defined by GPS points, by visual landmarks only, or by the flight plan route only—don’t match how MOAs are established, which is by altitude bands within a defined geographic area.