IFR Altitudes

Question 1

DA / H

Answer 1

Decision Altitude / Height on an IAP at which the pilot must decide whether to continue the approach or go around.

Question 2

MAA

Answer 2

Maximum Authorized Altitude.
MMA-17000 on IFR charts.

Question 3

MCA

Answer 3

Minimum Crossing Altitude

Question 4

MDA / H

Answer 4

Minimum Decent Altitude / Height: lowest altitude to which descent is authorized on a non-precision approach until the pilot sees the visual reference required for landing.

Question 5

MEA

Answer 5

Minimum En route Altitude: lowest published altitude between two fixes which assures navigational signal coverage and meets obstacle clearance.

Question 6

MOCA

Answer 6

Minimum Obstruction Clearance Altitude: Provides obstacle clearance and navigation coverage only up to 22 NM of the VOR.

Question 7

MRA

Answer 7

Minimum Reception Altitude

Question 8

MTA

Answer 8

Minimum Turning Altitude: provides lateral and vertical obstacle clearance in turns over certain fixes.

Question 9

MVA

Answer 9

Minimum Vectoring Altitude: lowest altitude at which an IFR aircraft will be vectored by a radar controller.

Question 10

OROCA

Answer 10

Off Route Obstruction Clearance Altitude: obstruction clearance with a 1,000 ft buffer in non-mountainous areas, 2,000 in mountainous areas. Does not provide nav/comm signal coverage.