AIM
4/20/23
5
−
1
−
8
Preflight
COND . . . . . . . .
Condition
CONS . . . . . . . . .
Continuous
CONST . . . . . . .
Construction
or
constructed
CPDLC . . . . . . . .
Controller Pilot Data Link
Communications
CTC . . . . . . . . . .
Contact
CUST . . . . . . . . .
Customs
D
DA . . . . . . . . . . .
Decision altitude
DEG . . . . . . . . . .
Degrees
DEP . . . . . . . . . .
Depart
or
Departure
DER . . . . . . . . . .
Departure end of the runway
DH . . . . . . . . . . .
Decision Height
DIST . . . . . . . . . .
Distance
DLY . . . . . . . . . .
Daily
DP . . . . . . . . . . .
Dew Point Temperature
DPT . . . . . . . . . .
Depth
DTHR . . . . . . . . .
Displaced Runway Threshold
E
E . . . . . . . . . . . . .
East
or
eastern longititude
EB . . . . . . . . . . .
Eastbound
EMERG . . . . . . .
Emergency
ENE . . . . . . . . . .
East
−
northeast
EQPT . . . . . . . . .
Equipment
ESE . . . . . . . . . .
East
−
southeast
EST . . . . . . . . . .
Estimate
or
estimated
or
estimation
(message type designator)
EXC . . . . . . . . . .
Except
F
FL . . . . . . . . . . . .
Flight level
FREQ . . . . . . . . .
Frequency
FRI . . . . . . . . . . .
Friday
FSS . . . . . . . . . . .
Flight Service Station
FST . . . . . . . . . . .
First
FT . . . . . . . . . . . .
Feet
(dimensional unit)
G
G . . . . . . . . . . . . .
Green
GA . . . . . . . . . . .
General aviation
GLD . . . . . . . . . .
Glider
GND . . . . . . . . . .
Ground
GP . . . . . . . . . . .
Glide Path
GRVL . . . . . . . . .
Gravel
H
HEL . . . . . . . . . .
Helicopter
HGT . . . . . . . . . .
Height
or
height above
HLDG . . . . . . . .
Holding
HLP . . . . . . . . . .
Heliport
HVY . . . . . . . . . .
Heavy
I
IFR . . . . . . . . . . .
Instrument Flight Rules
ILS . . . . . . . . . . .
Instrument Landing System
IM . . . . . . . . . . . .
Inner Marker
INOP . . . . . . . . .
Inoperative
INT . . . . . . . . . . .
Intersection
K
KT . . . . . . . . . . .
Knots
L
L . . . . . . . . . . . . .
Left
(preceded by runway designator
number to identify a parallel runway)
LAT . . . . . . . . . .
Latitude
LDA . . . . . . . . . .
Landing Distance Available
LDG . . . . . . . . . .
Landing
LEN . . . . . . . . . .
Length
LGT . . . . . . . . . .
Light
or
lighting
LGTD . . . . . . . . .
Lighted
LOC . . . . . . . . . .
Localizer
LONG . . . . . . . .
Longitude
M
MAINT . . . . . . .
Maintenance
MBST . . . . . . . . .
Microburst
MIL . . . . . . . . . .
Military
MIN . . . . . . . . . .
Minutes
MNT . . . . . . . . . .
Monitor
or
monitoring
or
monitored
MON . . . . . . . . .
Monday
MOV . . . . . . . . .
Move
or
moving
or
movement
N
N . . . . . . . . . . . . .
North
NAVAID . . . . . . .
Navigational aid
NB . . . . . . . . . . .
Northbound
NDB . . . . . . . . . .
Nondirectional Radio Beacon
NE . . . . . . . . . . .
Northeast
NEB . . . . . . . . . .
Northeast bound
NM . . . . . . . . . . .
Nautical Mile/s
NNE . . . . . . . . . .
North
−
northeast
NNW . . . . . . . . .
North
−
northwest
NOV . . . . . . . . . .
November
NW . . . . . . . . . . .
Northwest
NWB . . . . . . . . .
Northwest bound
O
OBSC . . . . . . . . .
Obscure
or
obscured
or
obscuring
OBST . . . . . . . . .
Obstacle
OPN . . . . . . . . . .
Open
or
opening
or
opened
OPS . . . . . . . . . .
Operations
P
PAPI . . . . . . . . . .
Precision Approach Path Indicator
PARL . . . . . . . . .
Parallel
PAX . . . . . . . . . .
Passenger/s
PCL . . . . . . . . . .
Pilot Controlled Lighting
PCT . . . . . . . . . .
Percent
PERM . . . . . . . . .
Permanent
PJE . . . . . . . . . . .
Parachute Jumping Activities
PLA . . . . . . . . . .
Practice Low Approach
PPR . . . . . . . . . .
Prior Permission Required
PRN . . . . . . . . . .
Pseudo
−
random Navigation
PT . . . . . . . . . . . .
Procedure Turn
R
R . . . . . . . . . . . . .
Red
R . . . . . . . . . . . . .
Right
(preceded by runway designator
number to identify a parallel runway)
RAI . . . . . . . . . . .
Runway Alignment Indicator
RCL . . . . . . . . . .
Runway Centerline