Glossary

Look up acronyms, technical terms and phrases to find out what they mean.

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CDI

Definition
Course Direction Indicator
Glossary Instrumentation

CDL

Definition
Configuration Deviation List
Glossary Airworthiness Source: CASR Part 43

CDN

Definition
Coordination (message type designator)
Glossary Flight operations Source: ICAO

CEN

Definition
En Route and Area ATC unit
Glossary Communication Source: AIS

CEO

Definition
Chief Executive Officer
Glossary Organisation

CET

Definition
Clearance Expiry Time
Glossary Search and rescue Source: AIS

CF

Definition
Change Frequency to
Glossary Communication Source: AIS

CFI

Definition
Chief Flying Instructor (replaced by Head of Operations)
Glossary Training Source: CAR 1988

CFIT

Definition
Controlled Flight into Terrain
Glossary Flight operations

CFL

Definition
Cleared Flight Level
Glossary Communication Source: AIS

CFM

Definition
Confirm, I confirm
Glossary Communication Source: AIS

CFP

Definition
Current flight plan
Glossary Flight planning Source: ICAO

CG

Definition
Centre of gravity
Glossary Airworthiness Source: ICAO

CGL

Definition
Circling guidance light(s)
Glossary Aerodrome Source: ICAO

CH

Definition
Channel continuity check
Description
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)
Glossary Navigation Surveillance Source: ICAO
Online version available at: https://www.casa.gov.au//resources-and-education/glossary
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