U.S. DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
Air Traffic Organization Policy

ORDER
JO 7340.2E
Effective Date:
July 24, 2014
 
     

Subject:  Contractions

[Back to Section 1. Decode]

H

Contraction

Definition

Usage

H24

continuous 24­hour service

ICAO

HAA

height above airport

GEN

HADA

Hawaiian Defense Area

GEN

HADD

Hawaiian Air Defense Division

GEN

HADIZ

Hawaiian Air Defense Identification Zone

GEN

HAL

height above landing

GEN

HANG

Hawaiian Air National Guard

GEN

HAPI

holding as previously instructed

ATC

HARS

hazardous area reporting service

ATC

HAT

height above touchdown

GEN

HAZ

hazard

GEN

HAZMAT

hazardous material

ICAO

HB

homing beacon

ATC

HBN

hazard beacon

ICAO

HCVIS

high clouds visible

NWS

HDATZ

high density traffic zones

ATC

HDF

high frequency direction finding station

ICAO

HDFRZ

hard freeze

NWS

HDG

heading

ICAO

HDOP

Horizontal Dilution of Precision

ATC

HDSVLY

Hudson Valley

NWS

HDTA

high density traffic airport

GEN

HDWND

headwind

ATC

HEAD

Head of State status

ICAO

HEL

helicopter

ICAO

HELI

heliport

GEN

HF

high frequency

GEN

HFR

hold for release

ATC

HGT

height

GEN

HHE

household effects

GEN

HI

high

NWS

HIALS

high intensity approach light system

GEN

HIBAL

high altitude balloon

GEN

HIEAT

highest temperature equaled for all time

NWS

HIEFM

highest temperature equaled for the month

NWS

HIESE

highest temperature equaled so early

NWS

HIESL

highest temperature equaled so late

NWS

HIFOR

high level forecast

NWS

HIRIV

how will arrival report be filed concerning

ATC

HIRL

high intensity runway lights

GEN

HITMP

highest temperature

NWS

HIWAS

hazardous inflight weather advisory service

GEN

HIXAT

highest temperature exceeded for all time

NWS

HIXFM

highest temperature exceeded for the month

NWS

HIXSE

highest temperature exceeded so early

NWS

HIXSL

highest temperature exceeded so late

NWS

HJ

sunrise to sunset

ICAO

HLDG

holding

ICAO

HLF

half

GEN

HLSTO

hailstones

NWS

HLTP

hilltop

NWS

HN

sunset to sunrise

ICAO

HND

hundred

GEN

HNGR

hangar

GEN

HO

service available to meet operational requirements

ICAO

HOL

holiday

GEN

HOP

handoff point

ATC

HOP

helicopter operations

GEN

HOSP

hospital aircraft

ICAO

HOW

handover word

ATC

HP

holding pattern

GEN

HPA

hectopascal

ICAO

HQ

headquarters

GEN

HR

here

GEN

HR

hour

ICAO

HRZN

horizon

GEN

HS

service available during scheduled operations

ICAO

HTN

heterodyne

GEN

HTR

heater

GEN

HUM

humanitarian mission

ICAO

HURCN

hurricane

NWS

HUREP

hurricane report

NWS

HV

high voltage

GEN

HVDF

high and very high frequency direction finding stations

ICAO

HVY

heavy

GEN

HWVR

however

GEN

HWY

highway

GEN

HX

high index

NWS

HX

no specific working hours

ICAO

HYD

hydraulic

GEN

HYDRO

hydrographic

GEN

HYR

higher

ICAO

HZ

haze

METAR

Hz

hertz

GEN

 

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