Garmin GPS 400 Pilot's Manual And Reference page 122

7
AUX PAGES
Flight Planning
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Flight Planning Page: Fuel Planning
To perform fuel planning operations:
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• REQ— Quantity of fuel required
• LFOB— Left-over fuel on board
• LRES— Left-over fuel reserve time
• EFF— Efficiency, expressed in distance per fuel units (e.g.
nautical miles per gallon)
• RNG— Range (distance)
• ENDUR— Flight endurance, or total available flight time
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