| A/N |
alpha/numeric |
| A/P |
airborne device that controls aircraft's movement: 1 axis (ailerons) = roll; 2 axis (ailerons & elevator) = roll & pitch; 3 axis (ailerons, elevator & rudder) = roll, pitch & yaw |
| A/P |
Autopilot |
| AA |
Average Avionics |
| AAA |
Above Average Avionics |
| ACT |
altitude compensated tilt |
| ACU |
antenna coupler unit |
| AD |
amendment to regulation published by FAA requiring specific inspection, modification or maintenance on aircraft |
| ADF |
airborne radio receiver showing bearing of radio station from aircraft |
| ADV |
advisory |
| AFIS |
airborne flight info sys |
| AFTT |
Airframe total time (hours) |
| AHRS |
attitude & heading refer. sys |
| AOA |
angle of attack |
| APU |
auxiliary power unit |
| APU |
Auxiliary Power Unit |
| ARINC |
aeronautical radio inc |
| ASCB |
avionics std. comm. buss. |
| ATI |
air traffic indicator |
| AVG I |
Average Interior |
| AVG P |
Average Paint |
| AVG P&I |
Average Paint & Interior |
| Annual |
yearly mandatory inspection of aircraft and engine |
| BAA |
Below Average Avionics |
| BAD I |
Bad Interior |
| BAD P |
Bad Paint |
| BAD P&I |
Bad Paint & Interior |
| BC |
bearing control |
| BFO |
beat frequency oscillator |
| BITE |
built-in test equipment |
| BMR |
Bearingless Main Rotor system |
| Boots |
Boots |
| C-spd prop |
automatically changes pitch to maintain a given rpm setting |
| C/R |
counter-rotating propellers |
| CC |
CorporateCare by Rolls Royce |
| CDI |
course deviation indicator |
| CVR |
airborne device that tapes and stores cockpit and radio communications |
| CWS |
control wheel steering |
| Com |
airborne radio that transmits and/or receives voice communications |
| Comp |
engine cylinder compression, ideally 85% of new or above |
| D/R |
dead reckoning |
| DA |
drift angle |
| DCP |
data control panel |
| DG |
directional gyroscope |
| DG |
flight instrument providing directional reference |
| DH |
indicating aircraft has sustained damage in a mishap or wreck |
| DME |
airborne instrument that measures distance of aircraft from a radio facility |
| DP |
drum pointer |
| DTK |
desired track |
| DVOR |
digital VOR readout |
| E/R |
enroute |
| EADI |
electronic attitude dir. ind. |
| ECDI |
electronic course dev. ind. |
| ECU |
Environmental Contol Unit |
| EFIS |
electronically depicted instrument(s) as opposed to providing a mechanical depiction |
| EFIS |
Electronic Flight Inst. System |
| EICAS |
eng indicating & crew advisory |
| ERO |
electronic readout |
| ESP |
P & W Eagle Service Plan |
| EXC I |
Excellent Interior |
| EXC P |
Excellent Paint |
| EXC P&I |
Excellent Paint & Interior |
| Encoding |
airborne instrument used in conjunction with transponder to advise controller of aircraft's altitude |
| F/S |
frequency storage |
| FAC |
flight advisory computer |
| FADEC |
full authority digital eng ctl |
| FD |
flight director |
| FD |
airborne automated flight and navigation system utilizing autopilot coupled to command bars that direct pilot to operate the control surfaces |
| FDSU |
flight data storage unit |
| FMS |
flight management system |
| Fuel inj |
type engine as opposed to carburetor |
| Full de-ice |
anti-ice equipment installed on wings, tail, propellers and windshield |
| Full panel |
full complement of gyro-driven attitude instruments for instrument flight |
| G/S |
glideslope |
| GCR |
ground clutter reduction |
| GMT |
Greenwich mean time |
| GPS |
a navigation system in which a land- or aircraft-based receiver decodes L-band radio signals transmitted from orbitting satellites to compute its latitude, longitude and & altitude (3-dimensional). |
| GPS |
GPS |
| GPWS |
ground proximity warning sys. |
| GPWS |
airborne device that warns flight crew of proximity to terrain |
| HSI |
horizontal situation indicator |
| HSI |
major periodic inspection of turbine engine at intervals recommended by the manufacturer |
| HSI |
aircraft instrument providing course direction data, normally operating with slaved directional gyro |
| HUD |
head-up display |
| IAS |
indicated airspeed |
| IFR |
instruments allowing flight by instrument reference rather than outside visibility |
| ILS |
instrument landing system |
| ILS |
airborne equipment enabling pilot to descend aircraft for landing without visual reference to ground until just prior to touchdown |
| IRS |
inertial reference system |
| ISS |
inertial sensor system |
| IVSI |
indicated vertical speed ind. |
| JSSI |
Jet Support Service Inc |
| LCD |
liquid crystal display |
| LRU |
line replacement unit |
| Loran |
long-range navigation |
| MDA |
minimum descent altitude |
| MDH |
past/repaired aircraft damage normally listed in FAA records and aircraft logbooks |
| MFD |
multi-function display |
| MLI |
See Hot section inspection |
| MLS |
microwave landing system |
| MPI |
Major Periodic Inspection |
| MSL |
mean sea level |
| MSP |
Maint Service Plan |
| MSP |
Garrett's program of progressive engine maintenance, including coverage for both scheduled and unscheduled maintenance |
| NDB |
nondirectional radio beacon |
| NMS |
navigation management system |
| NPU |
navigation processor unit |
| Nav |
normally VOR |
| Nav-com |
navigation and communications radio receiver |
| OAT |
instrument showing air temperature outside cockpit |
| OHC |
overhaul and certified |
| OMEGA |
form of VLF navigation |
| ONS |
OMEGA navigation sys |
| P&I |
seat upholstery, headliner, side panels |
| P-dial |
pointer dial |
| PBH |
Rolls-Royce's program of progressive engine maintenance, including coverage for both scheduled and unscheduled maintenance |
| PC |
a single-axis (roll) autopilot on Mooney aircraft |
| PET |
Piper's electrically operated elevator trim device |
| PFD |
primary function displays |
| PMS |
performance mgnt. computer |
| Primary Panel |
basic flight instruments with no gyro-driven attitude instruments |
| Prop jet |
aircraft with turbine engines incorporating a propeller; see Turboprop |
| REACT |
Rain Echo Attenuation Comp |
| RHO |
distance measuring symbol |
| RMI |
radio magnetic indicator |
| RMI |
aircraft navigational instrument that, when coupled to compass, shows direction of and bearing to selected navigation aid |
| RMU |
radio management units |
| RNAV |
airborne navigation and guidance system that uses VOR bearing and DME ranging to compute course and distance to a waypoint |
| RPU |
receiver processor unit |
| RSU |
radio switching unit |
| Radar |
Radar |
| SB |
manufacturer's notification of mandatory modification or maintenance of its product |
| SCORE |
since core inspection |
| SDS |
status display system |
| SL |
manufacturer's notice of its service policies and/or procedures |
| SMOH |
number of hours since major overhaul of engine(s) |
| SN |
aircraft's identification number assigned by manufacturer |
| STC |
document issued after aircraft has been altered from original type certificate specifications |
| Strobe Lights |
high-intensity flashing lights on aircraft |
| TBO |
number of hours recommended by engine manufacturers as a maximum before the first overhaul and between major overhauls |
| TCAD |
traffic/collison avoid. device |
| TCAS |
traffic alert & collison sys |
| TKE |
actual track |
| TSO |
techinical standard order |
| TT |
total time |
| TTW |
time to waypoint |
| Theta |
bearing symbol |
| Transponder |
See xpdr |
| Tri-gear |
landing gear in tricycle configuration; nose wheel rather than tail wheel |
| Turboprop |
turbine engine that drives a propeller |
| UHF |
ultra high frequency |
| UNAV |
unavailable |
| VLF |
very low frequency |
| VOR |
airborne device that receives signal from VOR ground station and indicates deviation from course to or from that station |
| VSI |
vertical speed indicator |
| WPT |
waypoint |
| XTK |
cross track |
| Xpdr |
airborne device that allows Air Traffic Control radar to identify aircraft's location and follow its flight path; with encoder, aircraft's altitude is displayed on radar |
| altim |
altimeter |
| ampx |
amplifier |
| aux |
auxiliary |
| avail |
available |
| bld |
blade |
| brg |
bearing |
| bts |
de-ice equipment on aircraft's wings & tail |
| cert |
certified |
| chnl |
channel |
| clr |
color |
| cnx |
connection |
| com |
communication transceiver |
| conv |
landing gear comprised of 2 main wheels & a tailwheel |
| conv |
conversion |
| convr |
converter |
| cycles |
on turbine engines, a cycle extends from start to full throttle to shutdown |
| dbase |
database |
| dig |
digital |
| elec |
electric |
| enc |
encoding |
| equip |
equipped |
| ext |
external, extended, extra |
| flt |
flight |
| g/s |
airborne component of instrument landing system that indicates correct angle of descent to runway on an instrument approach |
| g/w |
gross weight |
| hdg |
heading |
| horiz |
horizontal |
| incl |
includes |
| indc |
indicator |
| inst |
instrument |
| int'l |
international |
| intr |
internal, interior |
| kts |
knots |
| l/r |
long range |
| ldg lt |
aircraft light(s) that illuminate runways & taxiways |
| loc |
ILS component providing lateral guidance to runway centerline |
| loc |
localizer |
| lrn |
airborne long-range radio navigation system that can provide data on distance, bearing and time enroute to destination |
| mech |
mechanical |
| mfgd |
manufactured |
| mkr |
marker beacon |
| mkr bcn |
airborne component of ILS that locates transmitting equipment at fixed points along glideslope as position reference |
| mont |
monitor |
| o/h |
overhaul |
| optl |
optional |
| oxy |
system providing oxygen for passengers & crew at higher altitudes |
| pax |
passenger(s) |
| pneu |
pneumatic |
| pnl |
panel |
| ptt |
push to talk |
| pwr |
power |
| rcvr |
aircraft's voice radio receiver |
| recvr |
receiver |
| refurb |
refurbished |
| rem |
remote |
| retr gear |
wheels that retract into aircraft wings or fuselage |
| roc |
rate of climb |
| rts |
routes |
| sq |
squelch |
| std |
standard |
| sys |
system |
| t/o |
takeoff |
| t/r |
thrust reversers |
| tacan |
tactical air navigation |
| turbochg |
engine turbocharger(s) boosting manifold pressure |
| unl |
unlimited |
| vert |
vertical |
| w/s |
windshield |
| wind |
wind (w/d)direction (w/s)speed |
| xmtr |
transmitter |
| xpdr |
transponder |
| xtal |
crystal |
.