Definitions

Question 1

DA/H

Answer 1

Decision Altitude/Height
the altitude (MSL/Height (above the runway threshold on a vertically guided instrument approach procedure (ILS, LNAV/VNAV, LPV, etc.) at which the pilot must decide whether to continue the approach or to go around.

Question 2

MAA

Answer 2

Maximum Authorized Altitude
(MAA-17000) (17,000)

Question 3

MCA

Answer 3

Minimum Crossing Altitude
the lowest altitude at certain fixes that an airplane must cross when flying in the direction of a higher MEA.

Question 4

MDA/H

Answer 4

Minimum Descent Latitude/Height
The lowest altitude/height to which descent is authorized on a non-precision approach until the pilot sees the visual references required for landing

Question 5

MEA

Answer 5

Minimum Enroute Altitude
the lowest published altitude between radio fixes, which assures acceptable navigational signal coverage and meets obstacle clearance requirements

Question 6

MOCA

Answer 6

Minimum Obstruction Clearance Altitude
The lowest published altitude in effect between radio fixes on VOR airways, off-airway routes, or route segments that meet obstacle clearance requirements for the entire route segment and assures acceptable navigational signal coverage only within 22NM of a VOR

Question 7

MORA

Answer 7

Minimum Off Route Altitude

Question 8

MRA

Answer 8

Minimum Reception Altitude
The lowest altitude on an airway segment where intersection can be determined using radio navigation aids

Question 9

MTA

Answer 9

Minimum Turning Altitude
Provides vertical and lateral obstacle clearance in turns over certain fixes. Annotated with the MCA X icon and a note describing the restriciton

Question 10

MVA

Answer 10

Minimum Vectoring Altitude
the lowest altitude at which an IFR aircraft will be vectored by a radar controller, except as otherwise authorized