| Abbreviation | Definition |
|---|---|
| BPCU | Bus Power Control Unit |
| BPCU | Bus Protection Control Unit |
| BPPP | Beechcraft Pilot Proficiency Program |
| BPSK | Blood Pressure Stethoscope Kit |
| BPV | Bypass Valve |
| BR | Blue Room |
| BR&O | Build Requirements Objectives |
| BRA | Brasil Rodo Aéreo |
| BRAF | BRaking Action Fair |
| BRAG | BRaking Action Good |
| BRAN | BRaking Action Nil |
| BRAP | BRaking Action Poor |
| BRAT | Bi-Range Airborne Transport |
| BRG | Bearing |
| BRKT | Bracket |
| BROB | Basic Resources On Board |
| BRT | Bright |
| BRWD | Business Rewards |
| BS | Body Station |
| BSAA | British South American Airways |