Operational Navigation Flight Training Instruction
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 enroute; the time on one leg of the mission on the low-level jet flight log.
Funneling: Following a linear feature such as a road, river, etc. to locate a predetermined checkpoint.
HI-LO-HI: A flight profile that makes use of fuel-efficient high altitudes going to and from a low-level
Intermediate Checkpoint: A pilot-chosen checkpoint between the AP/1B checkpoints of a Low-Level,
High-Speed Training Route.
Jet Navigation Chart (JNC): A Department of Defense navigation chart for use at very high altitudes;
Jink: A defensive maneuver in three dimensions.
Landmark: Terrain feature used to visually navigate.
Low-Altitude, High-Speed Training Route: FAA authorized corridors where the 250 KIAS speed limit
does not apply; floors, ceilings and lateral boundaries are defined in FLIP AP/1B.