CRJ200 Airline Pilot

The personal experiences, thoughts of an CRJ captain

Aviation and CRJ Acronyms

Useful acronyms for aviation and the CRJ series. This is not an all inclusive list but it should be helpful when studying the CRJ. As always, refer to you Airplane Flight Manual, Airman Information Manual or appropriate Federal Aviation Regulation if there is any conflict.

A
A/C – Air-Conditioning
ADG – Air Driven Generator
A/G – Air/Ground
ADI – Attitude Direction Indicator
A/ICE – Anti-ice
ADS – Air Data System
A/P, AP – Autopilot
AFCS – Automatic Flight Control System
A/S – Airspeed
AFM – Airplane Flight Manual
A/SKID – Anti-skid
AGL, agl – Above Ground Level
AC – Alternating Current
AHC – Attitude Heading Computer
ACARS – Airborne Communications Addressing & Reporting System
AHRS – Attitude Heading Reference System
ACCEL – Acceleration, Accelerate(d), Accelerometers
AIL – Aileron
ACM – Air Cycle Machine
AILC – Anti-Ice Leak Controller
ACMP – Alternating Current Motor Pump (Electric Hydraulic Pump)
ALIGN – Aligning, Alignment
ACSC – Air-Conditioning System Controller
ALT – Altitude, Altimeter, Altitude Hold (PFD/FD)
ACT – Active
ALT CAP – Altitude Capture (PFD/FD)
ACU – Air-Conditioning Unit (Pack)
ALT HOLD – Altitude Hold
ADC – Air Data Computer
ALTN – Alternate
ADF – Automatic Direction Finder
ALTS – Selected Altitude Arm/Abort (PFD/FD)
AMB – Ambient
ATA – Air Transport Association, http://www.airlines.org
AMP – Amperes
ATC – Air Traffic Control
ANNUN – Annunciator
ATS – Air Turbine Starter
AOA – Angle Of Attack
ATT Attitude
APC – Auxiliary Power Control
ATTD – Attitude
APP – Approach
ATTND – Attendant
APPROX – Approximately
AUTO – Automatic
APR – Automatic Performance Reserve
AUTO BAL – Automatic Balance
APU – Auxiliary Power Unit
AUTO XFER – Automatic Transfer
ARINC – Aeronautical Radio Incorporated
AUX – Auxiliary
ARP – Air Data Reference Panel
AV – Avionics
ASYM – Asymmetrical
AVAIL – Available

B
B/AIR – Bleed Air
BLD – Bleed
B/C – Back Course
BRG – Bearing
B/LEAK – Bleed Leak
BRT – Bright
BARO – Barometric
BTL – Bottle
BATT – Battery
BTMS – Brake Temp Monitoring System
BDI – Bearing Distance Indicator
BTMU – Brake Temp Monitoring Unit
BITE – Built-ln-Test-Equipment
BYPS – Bypass
BK – Brake

C
CAA – Civil Aviation Authority
CM, cm – Centimeters
CAL – Calibrate
CMD – Command
CAP – Capture
CMPS – Compass
CAPT – Captain
CMPTR – Computer
CAS – Calibrated Airspeed, Crew Alerting System
CO2 – Carbon Dioxide
CB, C/B – Circuit Breaker
COMM – Communication
CBP – Circuit Breaker Panel
COMP – Compressor, Comparator
CC – Cubic Centimeter
COMPT – Compartment
CCW – Counter Clockwise
COND – Condition
CDL – Configuration Deviation List
CONFIG – Configuration
CDP – Compressor Discharge Pressure
CONN – Connection
CDU – Control Display Unit
CONT – Control, Controller, Continuous, Contactor
CFM – Cubic Feet Per Minute
CONT’D – Continued
CG – Center of Gravity
CORR – Correction
CH – Chapter
CPAM – Cabin Pressure Acquisition Module
CHAN – Channel
CPLT – Copilot
CHGR – Charger
CRS – Course
CHRT – Chart
CRT – Cathode Ray Tube
CK – Check
CRZ – Cruise
CKPT – Cockpit
CSD – Constant Speed Drive
CKT – Circuit
CTR – Center
CLB – Climb
CVR – Cockpit Voice Recorder
CLK – Clock
CW – Clockwise
CLSD – Closed
CYL – Cylinder

D
DA – Drift Angle
DFDR – Digital Flight Data Recorder
BDU – Data Base Unit
DG Directional Gyro
DC – Direct Current
DH – Decision Height
DCP – Display Control Panel
DIFF – Differential
DCU – Data Concentrator Unit
DIM – Dimming
DECEL – Decelerate(d)
DIR – Direct
DECR – Decrease
DIS – Distance (to way point)
DEFL – Defuel
DISC – Disconnect
DEG – Degree
DISCH – Discharge
DEPR – Depressurize
DISP – Dispatch, Display
DEPT – Department
DIST – Distance
DEST – Destination
DME – Distance Measuring Equipment
DET – Detector
DN – Down
DEV – Deviation
DOT – Department of Transport
DFDAU – Digital Flight Data Acquisition Unit
DR – Door

E
EAS – Equivalent Airspeed
ELEV – Elevator, Elevation
ECP – EICAS Control Panel
ELT – Emergency Locator Transmitter
ECS – Environmental Control System
EMER – Emergency
ECU – Electronic Control Unit
ENG – Engine
ED – EICAS Display
EPC – External Power Contactor
EDP – Engine Driven Pump
EQUIP – Equipment
EFIS – Electronic Flight InstrumentSystem
ESS – Essential
EGPWS – Enhanced Ground Proximity Warning System
ET – Elapsed Time
EGT – Exhaust Gas Temperature
ETA – Estimated Time of Arrival
EICAS – Engine Indication & Crew Alerting System
EVAC – Evacuation
EL – Elevation
EXH – Exhaust
ELEC – Electrical
EXTIN – Extinguish(ed)

F
F/CTL – Flight Control(s)
FIREX – Fire Extinguisher
FA – Flight Attendant
FLT – Flight
FAA – Federal Aviation Administration
FAR – Federal Aviation Regulation
FLUOR – Fluorescent
FAIL – Failure
FLX – Flex Thrust (i.e., Reduced Takeoff Thrust)
FADEC – Full Authority Digital Engine Control (CRJ700 and up)
FMS – Flight Management System
FCC – Flight Control Computer
FOD – Foreign Object Damage
FCU – Fuel Control Unit
FPM – Feet Per Minute
FD – Flight Director
FREQ – Frequency
FDAU – Flight Data Acquisition Unit
FT, ft – Feet, Foot
FDR – Flight Data Recorder
FUSE – Fuselage
FECU – Flaps Electronic Control Unit
FW – Fire Wall
FF, F/F – Fuel Flow
FWD – Forward
FIDEEX – Fire Detection & Extinguishing

G
G (+/-) – Receiver Gain
GMT – Greenwich Mean Time
G/S – Glide Slope
GND – Ground
GA – Go-Around
GPM – Gallons Per Minute
GAL – Gallon GPS Global Positioning System
GALY – Galley
GPWS – Ground Proximity Warning System
GCS – Ground Clutter Suppression GR Gear
GCU – Generator Control Unit
GRAV – Gravity
GE – General Electric
GRD – Ground
GEN – General
GS – Ground Speed
GLD – Ground Lift Dumping
GW – Gross Weight

H
HDG – Heading
hPa – Hecto Pascals
HDG HOLD – Heading Hold
HSI – Horizontal Situation Indicator
HDG SEL – Heading Select
HSTA – Horizontal Stabilizer Trim Actuator
HF – High Frequency (3 – 30 mHz)
HSTCU – Horizontal Stabilizer Trim Control Unit
Hg – Mercury
HTR – Heater
HI – High
HOR, HORIZ – Horizontal
HYD – Hydraulic
HP – High Pressure
Hz – Hertz

I
IB, I/B – Inboard
INCR – Increase
IC, I/C – Intercom
IND – Indication, Indicator
IAPS – Integrated Avionics Processor System
INFLT – In-Flight
IAS – Indicated Air Speed
INHIB – Inhibit
ICAO – International Civil Aviation Organization
INOP – Inoperative
ID,IDENT – Identification
INPH – Interphone
IDG – Integrated Drive Generator
INSP – Inspection
IFR – Instrument Flight Rules
INST – Instrument
IGN – Ignition
INT – Internal, Integral, Intersection
ILS – Instrument Landing System
IRS – Inertial Reference System
IM – Inner Marker
IRU – Inertial Reference Unit
IMC – Instrument Meteorological Conditions
ISA – International Standard Atmosphere
IMP – Imperial
ISO – International StandardOrganization
ISOL – Isolation, Isolated
in Hg – Inches of Mercury
ITT – Inter Turbine Temperature
INBD – Inboard
IN VAL – Invalid

J

JAA – Joint Aviation Authorities (Europe)

K
KT, KTS – Knots
kPa – Kilo Pascals
Kg(s) – Kilogram(s)
kVA – Kilo Voltamperes
kHz – Kilohertz
kW(s) – Kilo Watts
KIAS – Knots Indicated Airspeed

L
L – Left, Landing
LK – Leak
L/T – Landing/Taxi
LN – Left Nose
LAV – Lavatory
LNAV – Lateral Navigation
lb(s) – Pound(s)
LO – Low
LOC – Localizer
LCV – Load Control Valve
LP – Low Pressure
LDG – Landing
LDG GR – Landing Gear
LR – Left Rear
LDU – Lamp Driver Unit LRC Long Range Cruise
LE – Leading Edge
LG – Landing Gear LT(s) Light(s)
LGW – Landing Gross Weight
LW – Left Wing
LH – Left Hand LWD Left Wing Down
LIM – Limit
LWR – Lower

M
M – Mach Number
MIC – Microphone
m -Meter
MILS – .001 of an inch
MAA – Maximum Authorized IFR Altitude
MIN – Minimum
MAC – Mean Aerodynamic Cord
MISC – Miscellaneous
MAG – Magnetic
MKR – Marker
MAINT – Maintenance
MLG – Main Landing Gear
MALF – Malfunction
MLS – Microwave Landing System
MAN – Manual
MLW – Maximum Landing Weight
MAP – Ground Map (WXR)
MM – Middle Marker
MAX – Maximum
MMEL – Master Minimum Equipment List
MB, mbs – Millibars
MMO – Maximum Operating Speed in Mach Number
MCA – Minimum Crossing Altitude
MOCA – Minimum Obstruction Clearance Altitude
MCT – Maximum Continuous Thrust
MOD – Module
MDA – Minimum Descent Altitude
MON – Monitor
MEA – Minimum Enroute Altitude
MPH – Miles Per Hour
MECH – Mechanic
MRA – Minimum Reception Altitude
MED – Medium
MSG – Message
MES – Main Engine Start
MSL – Mean Sea Level
MEL – Minimum Equipment List
MTG – Miles To Go
MFD – Multi-Functional Display
MTOW – Maximum Takeoff Weight
MHz – Mega Hertz
MTW – Maximum Taxi Weight
Ml – Miles
MZFW – Maximum Zero Fuel Weight

Misc
% – Percent
°C – Degrees Celsius
°F – Degrees Fahrenheit

N
N/A – Not Applicable
NL – Nose Left
N1 – Low Pressure Rotor
NLG – Nose Landing Gear
N2 – High Pressure Rotor
NM – Nautical Mile(s)
NAM – Nautical Air Mile(s) No., # Number
NAV – Navigation
NORM – Normal
ND – Nose Down, Navigation Display
NU – Nose Up
NDB – Non directional Beacon
NEG – Negative
NW, N/W – Nosewheel
NEUT – Neutral

O
OAT – Outside Air Temperature
OK – Okay
OB, OUTBD – Outboard
OM – Outer Marker
OBS – Observer
OVBD – Overboard
OBV – Operability Bleed Valve
OVHT, OH – Overheat
OEI – One Engine Inoperative
OVLD – Overload
OEO – One Engine Only
OVSPD – Overspeed
OEW – Operating Empty Weight
OVTEMP – Over Temperature
OH, OVHD – Overhead
OXY, O2 – Oxygen

P
P/S – Pitot/Static
PROC – Procedure
PA – Passenger Address
PROT – Protection
PASS, PAX – Passenger
PROX – Proximity
PBE – Portable Breathing Equipment
PRV – Pressure Regulating Valve
PCU – Power Control Unit
PSEU – Proximity Sensor Electronic Unit
PF – Pilot Flying
PSI – Pounds Per Square Inch
PFD – Primary Flight Display
PSID – Pounds Per Square Inch Differential
PLA – Power Lever Angle
PSIG – Pounds Per Square Inch Gauge
PLT – Pilot
PSS – Proximity Sensor System
PNF – Pilot Not Flying
PSU – Passenger Service Unit
PNL – Panel
PT2 – Engine Inlet Pressure
POS – Position
PTCT – Protect
PPH – Pounds Per Hour
PTT – Push To Talk
PRESS – Pressure, Pressurization
PWR – Power
PRI – Primary

Q
QNE – ISA, Barometric Pressure
QNH – Altimeter Setting
QFE – Local Station Pressure
QRH – Quick Reference Handbook
QTY – Quantity

R
R – Right
ROT – Rotation
RA – Radio Altitude
RPM – Revolutions Per Minute
RAT – Ram Air Turbine
RT, R/T – Receiver Transmitter
RCCB – Remote Controlled Circuit Breaker
RTE – Route
RCDR – Recorder
RTO – Rejected Takeoff
RCVR – Receiver
RTU – Radio Tuning Unit
RDR – Radar
RUD – Rudder
RECOG – Recognition
RVR – Runway Visual Range
REF(s) – Reference(s)
RVSR – Reverser
REFL – Refuel
RW – Right Wing
REV – Reverse
RWD – Right Wing Down
RH – Right Hand
RWY – Runway
RMI – Radio Magnetic Indicator

S
SAT – Static Air Temperature
SPLR(s) – Spoiler(s)
SCAV – Scavenge
SQL – Squelch
SEC – Second, Secondary
SSB – Single Side Band
SECS – Spoiler Electronic Control System
STA – Station
SECU – Spoiler Electronic Control Unit
STAB – Stabilizer
SEL – Select, Selector
STAT – Status
SELCAL – Selective Calling
STBY – Standby
SENS – Sensitivity, Sensor
STEER – Steering
SERV – Service
SUPPL – Supply
SMKG – Smoking
SW – Switch
SOV – Shutoff Valve
SYN – Synchronize
SP, SPD – Speed
SYNC – Synchronous
SPKR – Speaker
SYS, SYST – System

T
T/C – Top of Climb
TGT – Target
T/D – Top of Descent
TO, T/O – Takeoff
T/R – Thrust Reverser
TOL – Tolerance
TAS – True Airspeed
TRK – Track
TAT – Total Air Temperature
TRM – Trim
TCAS – Traffic Alert and Collision Avoidance System
TRU – Transformer Rectifier Unit
TE – Trailing Edge
TURB – Turbulence
TEMP – Temperature
T2 – Engine Inlet Temperature

U
UNSCHD – Unscheduled
USG – US Gallons
USB – Upper Side Band
UTIL – Utility

V
V – Volt
VMC – Visual Meteorological Conditions
Vac – Volt Alternating Current
VNAV – Vertical Navigation
Vdc – Volt Direct Current
VOL – Volume
V/S – Vertical Speed
VOLT – Voltage
VERT – Vertical
VOR – VHF Omnidirectional Range Station
VFR – Visual Flight Rules
VORTAC – VOR and TACAN co-located
VG – Vertical Gyro
VS – Vertical Speed Mode
VHF – Very High Frequency (30-300 mHz)
VSI – Vertical Speed Indicator
VIB – Vibration

W
WARN – Warning
WIND – Window
W/C – Wind Component
WOW – Weight-On-Wheels
W/S – Wind Shear
WPT – Way point
W/W – Wheel Well
WS – Second Segment Limited Weight
WF – Runway Length Limited Weight
WSHLD – Windshield
WT – Weight
WX – Weather
WHLS – Wheels
WXR – Weather Radar

X
XFER, XFR – Transfer
XPNDR – Transponder
XFLOW – Cross Flow
XTK – Cross Track
XMIT – Transmit
XWC – Cross Wind Component

Y

YD, Y/D – Yaw Damper

Z

ZFW – Zero Fuel Weight

 
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