| Abbreviation | Definition |
|---|---|
| BSAG | Blue Square Aviation Group |
| BSAT | Bachelor of Science in Aviation Technology |
| BSB | Bus Source Breaker |
| BSCU | Brake System Control Unit |
| BSIA | Baghdad Saddam International Airport |
| BST | British Summer Time |
| BSTA | Body Station |
| BSU | Beam Steering Unit |
| BSU | Bypass Switch Unit |
| BSV | Burner Staging Valve |
| BSWPM | Boeing Standard Wiring Practices Manual |
| BTB | Back-To-Birth |
| BTB | Bus Tie Breaker |
| BTE | Bus Tie Contactor |
| BTEAH | Bring The Epic Adventure Home |
| BTL | Bottle |
| BTMS | Brake Temperature Monitor System |
| BTMU | Brake Temperature Monitoring Unit |
| BTP | Batter Than Plan |
| BTU | Ball Transfer Unit |