HAAPC: Heavy antiaircraft Practice Camp
HAD: Home Aircraft Depot
HAT: height above touchdown
HAZCOM: Hazard Communication
HB: Heavy Bomber
HCCS: Home Command Communications Squadron
HCEU: Home Command Examining Unit
HCF: Helicopter Communications Flight
HCF: Home Communications Flight
HCU: Heavy Conversion Unit
HD: Home Defence
HDA: Head Disk Assembly
Hdlg Sqn: Handling Squadron
HDU: Helicopter Development Unit
HE: High Explosive
HE: Home Establishment
HFDF: High Frequency Direction Finding
HFF: Heavy Freight Flight
HFU: Home Ferry Unit
HGCU: Heavy Glider Conversion Unit
HGMU: Heavy Glider Maintenance Unit
HGSU: Heavy Glider Servicing Unit
HGTU: Heavy Glider Training Unit
HKAAF: Hong KOng Auxiliary Air Force
HKFS: Hong Kong Fighter Squadron
HKVA: Hong Kong Volunteer Air Force
HMS: His/Her Majesty's Ship
HMT: His/Her Majesty's Transport Ship
HOCF: Helicopter Operational Conversion Flight
Hptm: Hauptman
HQ: Headquarters
HQ AC: Headquarters Air Cadets
HQ AFRC: Headquarters Air Force Reserve Command
HQ AFSPC: Headquarters Air Force Space Command
HQ ATA: Head Quarters Air Transport Auxiliary
HQ EFT: Headquarters Elementary Flying Training
HQ FPP: Head Quarters Ferry Pilots Pool
HQ P&SS: Headquarters Provost & Security Services
HQ PTC: Headquarters Personnel & Training Command
HQ STC: Headquarters Strike Command