Which statement about minimum IFR altitude is true?

Which statement about minimum IFR altitude is true?

• A. MEA provides obstacle clearance but does not guarantee navigation signal reception
• B. MOCA is higher than MEA
• C. MVA is used for VFR operations
• D. MEA provides both obstacle clearance and navigation signal reception

Answer: (D)

Minimum enroute altitude is the lowest published altitude between fixes that ensures both obstacle clearance and reliable navigation signal reception along the route. This dual guarantee lets you stay clear of terrain and obstacles while still being able to receive the necessary navigation signals to fly the course. That’s why the statement about MEA providing both obstacle clearance and navigation signal reception is correct. MOCA also provides obstacle clearance but guarantees navigation signal reception only within about 100 miles of the VOR, not along the entire segment. Minimum Vectoring Altitude is used for IFR radar vectoring and isn’t a standard enroute altitude for VFR operations, so it doesn’t apply here.

Minimum enroute altitude is the lowest published altitude between fixes that ensures both obstacle clearance and reliable navigation signal reception along the route. This dual guarantee lets you stay clear of terrain and obstacles while still being able to receive the necessary navigation signals to fly the course. That’s why the statement about MEA providing both obstacle clearance and navigation signal reception is correct. MOCA also provides obstacle clearance but guarantees navigation signal reception only within about 100 miles of the VOR, not along the entire segment. Minimum Vectoring Altitude is used for IFR radar vectoring and isn’t a standard enroute altitude for VFR operations, so it doesn’t apply here.