| Abbreviation | Definition |
|---|---|
| ALR | Aircraft Load Rating |
| ALRE | Aircraft Launch and Recovery Equipment |
| ALSS | Aviation Life Support System |
| ALT | Alternator |
| ALT | ALTitude |
| ALTI | Altimeter |
| ALTM | Altimeter |
| ALTN | Alternate |
| AM | Aviation Mechanic |
| AMAD | Airframe Mounted Accessory Drive |
| AMAP | Airport Multimodal Accessibility Plan |
| AMAS | Aviation Medicine Advisory Service |
| AMC | Aircrafts Maintenance Corporation |
| AMC | Aviation Maintenance Company |
| AMCA | Advance Medium Combat Aircraft |
| AMCA | Advanced Medium Combat Aircraft |
| AMCG | Aviation Management Consulting Group |
| AMCS | Approved Manual Control System |
| AMD | Aviation Maintenance Department |
| AMDO | Aviation Maintenance Duty Officer |