Glossary
Operational Navigation
GLOSSARY
A
AAA: Anti-Aircraft Artillery
ALT: Altitude. Top block of Low-Level Jet Flight Log has altitude AGL for leg; bottom block has
emergency safe altitude (MSL) for leg.
AP/1B: Flight information publication with information on training routes in North and South
America; published by the Department of Defense.
ATA: Actual time of arrival at a checkpoint.
B
Bingo: Aircraft is considered to be in an emergency/fuel critical situation.
Blind: No sight (or lost sight) of wingman.
C
Checkpoint: A landmark used as a time and/or course reference.
CHUM: DMA Aeronautical Chart Updating Manual; contains changes to individual DoD charts;
published by the Department of Defense.
Coast-in: A point on a coastline where the aircraft crosses over to become "feet-dry" after a flight
over water.
Combat Plotter: A planning tool with course protractor, turn radius templates, and time and
distance scales; distances in nautical miles. See also Navigation plotter.
CUS: Magnetic course line on the low-level jet flight log.
D
Dead Reckoning: Use of time, distance and heading for purposes of navigation.
DIST: Distance in nautical mile on the low-level jet flight log.
E
EFL: Estimated fuel left at a checkpoint, on the low-level jet flight log.
EFR: Estimated fuel required for one leg of a flight, on the low-level jet flight log.
ETA: Estimated time of arrival on the low-level jet flight log; not Zulu or local time, but cumulative
time from first checkpoint.
ETE: Estimated time en route; the time on one leg of the mission on the low-level jet flight log.
F
Funneling: Following a linear feature such as a road, river, etc., to locate a predetermined check-
point.
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