Acronyms
All | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
C
| Acronym | Meaning | Source |
| C | Degrees Celsius (Centigrade) | AIS |
| C | Centre (Runway) | AIS |
| CA | Course Acquisition | |
| CA/GRO | Certified Air/Ground Radio Operator | CASR Part 139 |
| CA/GRS | Certified Air/Ground Radio Service | CASR Part 171 |
| CAA | Civil Aviation Authority | |
| CAA NZ | Civil Aviation Authority New Zealand | |
| CAAP | Civil Aviation Advisory Publication | CAR 1988 |
| CAGRO | Certified Air Ground Radio Operation | AIP |
| CAMP | Continuous Airworthiness Maintenance Program | CASR Part 145 |
| CAO | Civil Aviation Order | |
| CAR | Civil Aviation Regulation (1988) [existing] | |
| CAR | Civil Aviation Regulation (1998) [now known as 1998 CASR) | |
| CAS | Calibrated air speed | ICAO |
| CASA | Civil Aviation Safety Authority | |
| CASR | Civil Aviation Safety Regulation | |
| CAT | Category | AIS |
| CAT | Clear Air Turbulence | AIS |
| CAVOK | Visibility, cloud and present weather better than prescribed values or conditions | AIS |
| CB | Cumulonimbus (met) | AIS |
| CBT | Competency-based Training | |
| CC | Cirrocumulus (met) | AIS |
| CCA | Corrected meteorological message (for CCB, CCC..etc in sequence) (message type designator) | ICAO |
| CCF | Capability Check Flight | |
| CCTS | Circuits | AIS |
| CD | Candela | ICAO |
| CDCCL | Critical Design Configuration Control Limit | |
| CDI | Course Direction Indicator | |
| CDL | Configuration Deviation List | CASR Part 43 |
| CDM | Collaborative Decision Making | |
| CDN | Coordination (message type designator) | ICAO |
| CDTI | Cockpit Display of Traffic Information | |
| CEN | En Route and Area ATC unit | AIS |
| CEO | Chief Executive Officer | |
| CET | Clearance Expiry Time | AIS |
| CF | Change Frequency to | AIS |
| CFI | Chief Flying Instructor | CAR 1988 |
| CFIT | Controlled Flight into Terrain | |
| CFL | Cleared Flight Level | AIS |
| CFM | Confirm, I confirm | AIS |
| CG | Centre of gravity | ICAO |
| CGL | Circling guidance light(s) | ICAO |
| CH | This is a channel continuity check of transmission to permit comparision of your record of channel-sequence numbers of messages received on the channel (to be used in AFS as a procedure signal) | ICAO |
| CHG | Modification (message type designator) | ICAO |
| CHTR | Charter | AIS |
| CI | Cirrus (met) | AIS |
| CIDIN | Common ICAO data interchange network | ICAO |
| CIR | Command Instrument Rating | CAR 1988 |
| CIT | Near, Over Large Town(s) | AIS |
| CIV | Civil | AIS |
| CK | Check | AIS |
| CL | Centre Line | AIS |
| CLA | Clear type of ice formation | AIS |
| CLBR | Calibration | AIS |
| CLD | Cloud (met) | AIS |
| CLG | Calling | AIS |
| CLIAS | Climbing Indicated Airspeed | AIS |
| CLMAX | Maximum Co-efficient of Lift | |
| CLR | Clear, Cleared to... Clearance | AIS |
| CLSD | Closed, Close, Closing | AIS |
| CM (cm) | Centimetre | AIS |
| CMB | Climb to or Climbing to | AIS |
| CMM | Component Maintenance Manual | WATOG |
| CMPL | Configuration, Maintenance and Procedures | |
| CMPL | Completion, Completed, or Complete | AIS |
| CMR | Certification Maintenance Requirements | |
| CMSD | Commissioned | AIS |
| CNL | Cancel | AIS |
| CNL | Flight plan cancellation message | AIS |
| CNS | Communications, Navigation and Surveillance | AIS |
| COA | Certificates of Approval (issued to maintenance organisations) | CAR 1988 |
| CoA | Certificate of Airworthiness | CAR 1988 |
| COM | Communications | AIS |
| CONC | Concrete | AIS |
| COND | Condition | AIS |
| CONS | Continuous | AIS |
| CONST | Construction, Constructed | AIS |
| CONT | Continue(s), Continued | AIS |
| COOR | Coordinate, Coordinated | AIS |
| COORD | Coordinates | AIS |
| COP | Change over point | ICAO |
| CoR | Certificate of Registration | CAR 1988 |
| COR | Correct, Corrected, Correction | AIS |
| COS | Conical Surface | AIS |
| COT | At the Coast, Coastal | AIS |
| COV | Cover, Covered, Covering | AIS |
| CP | Chief Pilot | CAR 1988 |
| CPDLC | Controller-Pilot Data Link Communication | ICAO/AIP |
| CPL | Commercial Pilot Licence | CAR 1988 |
| CPL | Current flight plan | ICAO |
| CRC | Cyclic redundancy check | ICAO |
| CRIS | Cost Recovery Impact Statement | Department of Finance |
| CRM | Crew Resource Management | CASR Part 121 |
| CRZ | Cruise | AIS |
| CS | Cirrostratus (met) | AIS |
| CS | Call sign | AIS |
| CSDD | Common Support Data Dictionary published by the Air Transport Association of America (ATA). The CSDD replaces the WATOG. | |
| CSIRO | Commonwealth Scientific and Industrial Research Organisation | |
| CSU | Constant Speed Unit | |
| CTA | Control Area | AIS |
| CTAF | Common Traffic Advisory Frequency | CASR Part 172/AIP |
| CTAF(R) | Common Traffic Advisory Frequency - (Radio) | AIS |
| CTAM | Climb to and maintain | ICAO |
| CTC | Category Technical Competency | CAR 1988 |
| CTC | Contact | ICAO/AIP |
| CTL | Control | AIS |
| CTMS | Central Traffic Management System | |
| CTN | Caution | AIS |
| CTR | Control Zone | AIP |
| CU | Cumulus (met) | AIS |
| CUF | Cumuliform (met) | AIS |
| CUST | Customs | AIS |
| CVR | Cockpit voice recorder | ICAO/AIP |
| CW | Carrier Wave | ICAO |
| CWY | Clearway | AIS |