SPILVE.LV • Aviation abbreviations - H

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Charts of Latvia

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Aviation abbreviations

H
H24 — Continuous day and night service HAA — Height above aerodrome HAM — Head of aircraft maintenance HAMC — Head of aircraft maintenance control HAPI — Helicopter approach path indicator HAT — Height above threshold HBARO — Barometric altitude HBN — Hazard beacon HDF — High frequency direction-finding station HDG — Heading HDG SEL — Heading select HDOT — Inertial vertical speed HDS — Hours of daylight saving HE — Altitude arror HEL — Helicopter HF — High frequency (3,000 to 30,000 KHz) HF — Human factors HFEM — Human factor and error management system HGS — Heads-up guidance system HGT — Height, height above HI — High HIAL — High intensity approach lighting HIOL — High intensity obstacle lights HIRL — High intensity runway lighting HIRS — High resolution infrared sounder HJ — Sunrise to sunset HLDG — Holding	HLS — Helicopter landing site HMI — Human-machine interface HN — Sunset to sunrise HO — Service available to meet operational requirements HOFO — Head of flying operations HOSP — Hospital aircraft HOTAS — Head of training and standards HOTC — Head of training and checking HP — Holding pattern HP — Horse power HPA — Hectopascal HPRES — Pressure altitude HR — Hours HS — Service available during hours of scheduled operations HS — Homestead HSI — Horizontal Situation Indicator HSL — Hold short lights HUD — Head up display HURCN — Hurricane HVDF — High and very high frequency direction finding station HVY — Heavy HX — No specific working hours HYR — Higher HZ — Haze HZ (Hz) — Hertz HZS — Horizontal surface

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