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 |