| Abbreviation | Definition |
|---|---|
| HELL | Height, Engine. Location, Lookout |
| HELO | Helicopter Extraction and Landing Operation |
| HEMS | Helicopter Emergency Medical Services |
| HeNAP | Helical Noise Abatement Procedure |
| HEPA | High Efficiency Particulate Air |
| HF | High Frequency |
| HFEC | High Frequency Eddy Current |
| HFM | Hollow Fiber Membrane |
| HFRS | Helicopter Flight Rescue System |
| HFSOV | High Flow Shut-Off Valve |
| HIAA | Halifax International Airport Authority |
| HICA | Haryana Institute Of Civil Aviation |
| HID | High Intensity Discharge |
| HIL | Hold Item Lists |
| HIRF | High Intensity Radiated field |
| HKALPA | Hong Kong Airline Pilot Association |
| HKG | Honk Kong International Airport |
| HKIA | Hong Kong International Airport |
| HLF | High Lift Function |
| HLN | High Level Network |