Bit A binary digit. Smallest data unit in a microprocessor
system.
BIT Built-In-Test
BITE Built-In Test Equipment
BLK (1) Block
(2) Black
BMV Brake Metering Valve
BNR Binary
BOM Bill of Material
BOP Bit Oriented Protocol
Boresighting The process of aligning a directional antenna system.
BP (1) BITE Processor
(2) Bottom Plug
BPCU Bus Power Control Unit
BPSK Binary Phase Shift Keying
BRG Bearing
BRT Brightness
BSCU Brake System Control Unit
BSU (1) Bypass Switch Unit
(2) Beam Steering Unit
BTB Bus Tie Breaker
BTMU Brake Temperature Monitor Unit
BU Backup
BusAv Business Aviation
Byte A grouping of eight bits.
C
CAA Civil Aviation Authority. A regulatory agency in the
United Kingdom.
CAAC Civil Aviation Administration of China
CAASD Center for Advanced Aviation System
Development(The Mitre Corp.)
C/A Code (1) GPS Course Acquisition Code
(2) Course-Acquisition Code
CAC Caution Advisory Computer
CACP Cabin Area Control Panel
CAD Computer Aided Design
CAE Component Application Engineer
CAGE Commercial Avionics GPS Engine
CAH Cabin Attendant Handsets
CAI Caution Annunciator Indicator
Calibrated Airspeed Corrected for instrument errors and errors due to position or location of the pressure source. At stan dard sea level conditions,CAS is equal to true air speed (TAS).
CALSEL A variation of the SELCAL system in which the SEL-CAL signal is combined with a special gating tone to produce an automatic function by the receiver. This system is only a proposal and not yet implemented.
CAM Computer Aided Manufacturing
CAMI FAA Civil Aeromedical Institute
CAPT Captain
Carrier An ac signal that can be modulated by changing the amplitude,frequency or pulse of the signal.
CAS (1) Computed Airspeed (2) Collision Avoidance System
CAT Computer Aided Testing
CAT I Operational performance Category I. An ILS facility providing operation down to a 60-meter (200 feet) decision height and with runway visual range not less than 800 meters (2600 feet) and a high probability of approach success.
CAT II Operational performance Category II. An ILS facility providing operation down to a 30-meter (100 feet) decision height and with runway visual range not less than 400 meters (1200 feet) and a high probability of approach success.
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