| Abbreviation | Definition |
|---|---|
| CASP | Cooperative Aviation Security Programme |
| CASPA | Cranfield Aerospace Special Purpose Aircraft |
| CASR | Civil Aviation Safety Regulation |
| CASR | Civil Aviation Safety Regulations |
| CASR | Civil Aviation Safety Requirement |
| CASS | Cargo Account Settlement Systems |
| CASS | Continuous Analysis and Surveillance System |
| CAST | China Aerospace Science and Technology |
| CAT | Category |
| CATC | Civil Aviation Training Center |
| CATI | Category Introduction |
| CATII | Category II |
| CATIII | Category III (Lower Landing Minimum Status of the Aircraft) |
| CATSA | Canadian Air Transport Security Authority |
| CAUC | Civil Aviation University of China |
| CAVO | Chief Air Terminal Officer |
| CAVOK | Ceiling And Visibility OKay |
| CBA | Collective Bargaining Agreement |
| CBA | Cost-Benefit Analysis |
| CBAAC | Commercial and Business Aviation Advisory Circular |