Aviation Maintenance Terms beginning with C
CRT
Cathode ray tube. An electronic display tube in which a stream of electrons is attracted to the charged inner surface of the tube face. Acceleration grids and inner surface of the tube face. Acceleration grids and focusing grids speed the movement of the electrons and shape the beam to a pin- point size. Electrostatic or electromagnetic forces caused by deflection plates or coils move the beam over the face of the tube. The inside of the tube face is treated with a phosphor material that emits light when the electrons strike it.
CSD
Constant-speed drive. A component used with either aircraft gas turbine or reciprocating engines to drive AC generators. The speed of the output shaft of the CSD is held constant while the speed of its input shaft varies. The CSD holds the speed of the generator, and the frequency of the AC constant as the engine speed varies through its normal operating range.
CTF
Centrifugal twisting force. The force acting about the longitudinal axis of a propeller blade, and which tries to rotate the blade to a low-pitch angle. As the propeller rotates, centrifugal force tries to flatten the blade so all of its mass rotates in the same plane.
CDI
Course deviation indicator.
CDU
Control display unit.
CRT
Cathode-ray tube.
CAMP
Continuous airworthiness maintenance program.
CAS
Calibrated airspeed.
CAT II
Category II.
CMP
Configuration, maintenance, and procedures.
C.G.
Center Of Gravity
CAC
Caution Advisory Computer
CAGE
Commercial and Government Entity Code
CAWS
Central Aural Warning System; Caution and Warning System
CB, C/B, or CKT/BKR
Circuit Breaker
CDI
Course-deviation Indicator
CDU
Central Display Unit
CFC
Carbon Fiber Composite
CFDIU
Centralized Fault Display Interface Unit
CFDS
Centralized Fault Display System
CH or CHAN
Channel
CHGR
Charger
CKT
Circuit
CLK
Clock
CLR
Clear
CMCS
Central Maintenance Computer System
CMPTR
Computer
CO
Carbon Monoxide
COAX
Coaxial
COP
Copper
CP
Control Panel
CRT
Cathode-ray Tube; Circuit
CSE or CSEU
Control System Electronics Unit
CSEUP
Control System Electronics Unit Panel
CT
Computed Tomography
CT
Current Transformer
CTN
Caution
CU
Control Unit; Copper
CVR
Cockpit Voice Recorder
CW
Continuous Wave
CDTI
Cockpit Display of Traffic Information
CAVS
CDTI Assisted Visual Separation
CFR
Code of Federal Regulations
CPDLC
Controller Pilot Data Link Communication