Aviation Dictionary

Common definitions and acronyms that you may encounter during flying training.

List of aviation related definitions

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C of A -  Certificate of Airworthiness
C of R -  Certificate of Registration
CAA -  Civil Aviation Authority
Capillary -  Smallest of a body's blood vessels responsible for the delivery of essential nutrients directly to tissues throughout the body
Cellular Respiration -  The process of oxygen use and carbon dioxide production at the cellular level
Centre of Gravity -  The point at which weight is evenly dispersed and all sides are in balance
Certificate of Airworthiness (C of A) -  A certificate issued for an aircraft in the state in which the aircraft is registered.
Certificate of Registration (C of R) -  Legal document issued as part of an aircraft's documentation
CG -  Centre of Gravity
Circadian Rhythm -  The 24 hour cycle in the physiological processes of living beings
Clearway -  The area beyond the paved runway free of obstructions
Cochlea -  A small, curled tube in the inner ear filled with liquid
Commercial Air Transport Operation -  An operation involving the transport of passengers, cargo or male for remuneration
Cones -  Sensitive to bright light conditions
Control Area (CTA) -  Controlled airspace extending upwards from a specified lower limit above the earth to a specified upper limit. It can be Class A, D or E airspace
Control Zone (CTZ) -  Controlled airspace which extends from the surface to a specified upper limit, established to protect air traffic operating to and from that airport
Controlled Airspace -  Classes A, B, C, D and E
Cornea -  The outer covering of the eyeball
CTA -  Control Area. A controlled airspace extending upwards from a specified lower limit above the earth to a specified upper limit. It can be Class A, D or E airspace
CTR -  Control Zone. Controlled airspace which extends from the surface to a specified upper limit, established to protect air traffic operating to and from that airport. It may be Class A or D airspace