Aeronautical Terms beginning with H
HAA
Height Above Airport.
HAL
Height Above Landing.
HAT
Height Above Touchdown Elevation.
HF
High Frequency.
Hg
Abbreviation for mercury, from the Latin hydrargyrum.
HSI
Horizontal Situation Indicator.
HUD
Head-Up Display.
Copyright © 2002-2026 Touring Machine Company. All Rights Reserved.