Appendix E: Glossary -Cont.

T-34C INSTRUMENTS

APPENDIX E

MINIMUM FUEL Indicates that an aircraft's fuel supply has reached a state where, upon

reaching the destination, it can accept little or no delay. This is not an emergency situation but

merely indicates an emergency situation is possible should any undue delay occur. The pilot is

not to expect priority handling unless specifically requested or declares "emergency fuel."

MINIMUM HOLDING ALTITUDE (MHA) The lowest altitude prescribed for a holding

pattern which assures navigational signal coverage, communications, and meets obstacle

clearance requirements.

MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA) The specified altitude

in effect between radio fixes on VOR airways, offairway routes or route segments, which meets

obstruction clearance requirements for the entire route segment and which assures acceptable

navigational signal coverage only within 25 SM, 22 NM, of a VOR.

MINIMUM RECEPTION ALTITUDE (MRA) The lowest altitude required to receive

adequate signals to determine specific VOR/VORTAC/TACAN fixes.

MINIMUM SAFE ALTITUDE An altitude expressed in 100foot increments providing

1000 feet of clearance over all obstructions/terrain within 25 NM of the navigational aid on

which the instrument approach chart is centered.

MINIMUM SECTOR ALTITUDE Altitude which provides 1000 feet of obstacle clearance

within 25 NM of a NAVAID. It is designated for sectors of at least 90 and found on the

planview of Instrument Approach Procedures. These altitudes are for emergency use only and

do not assure acceptable NAVAID sector coverage.

MINIMUM VECTORING ALTITUDE (MVA) The lowest altitude, (expressed as an MSL

altitude) that aircraft will be vectored by a radar controller. This altitude assures

communications radar coverage and meets obstruction clearance criteria. It may be lower than

the MEA.

MISSED APPROACH A maneuver conducted when an instrument approach cannot be

completed to a landing.

MISSED APPROACH POINT (MAP) A point on an instrument approach at which Missed

Approach Procedures shall be executed if required visual reference does not exist.

NAVAID An electronic device which provides position data to aircraft in flight. NAVAIDS

are normally located at fixed positions on the ground. The NAVAIDS most commonly used by

the T34C are VOR, VORTAC and TACAN aids.

NONPRECISION APPROACH A standard Instrument Approach Procedure in which no

electronic glideslope is provided; e.g., VOR, TACAN, LOC, GPS or ASR approaches.

PRECISION APPROACH A standard Instrument Approach Procedure in which electronic

glideslope/glidepath is provided; e.g., ILS, PAR.

E-5

GLOSSARY