AIM
12/2/21
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
RCLL . . . . . . . . . Runway Centerline Light
REDL . . . . . . . . . Receive/Receiver
RLLS . . . . . . . . . Runway Lead
−
in Light System
RMK . . . . . . . . . Remark
RTS . . . . . . . . . . Return to Service
RTZL . . . . . . . . . Runway Touchdown Zone Light(s)
RVR . . . . . . . . . . Runway Visual Range
RWY . . . . . . . . . Runway
S
S . . . . . . . . . . . . . South
or
southern latitude
SA . . . . . . . . . . . Sand
SAT . . . . . . . . . . Saturday
SB . . . . . . . . . . . . Southbound
SE . . . . . . . . . . . . Southeast
SEC . . . . . . . . . . Seconds
SFC . . . . . . . . . . Surface
SN . . . . . . . . . . . Snow
SR . . . . . . . . . . . . Sunrise
SS . . . . . . . . . . . . Sunset
SSR . . . . . . . . . . Secondary surveillance radar
SSW . . . . . . . . . . South
−
southwest
STD . . . . . . . . . . Standard
SUN . . . . . . . . . . Sunday
SW . . . . . . . . . . . Southwest
SWB . . . . . . . . . . Southwest bound
T
TAR . . . . . . . . . . Terminal area surveillance radar
TAX . . . . . . . . . . Taxing
or
taxiing
TDZ . . . . . . . . . . Touchdown Zone
TEMPO . . . . . . . Temporary
or
temporarily
TFC . . . . . . . . . . Traffic
THR . . . . . . . . . . Threshold
THU . . . . . . . . . . Thursday
TKOF . . . . . . . . . Takeoff
TODA . . . . . . . . . Take
−
off Distance Available
TORA . . . . . . . . . Take
−
off Run Available
TRG . . . . . . . . . . Training
TUE . . . . . . . . . . Tuesday
TWR . . . . . . . . . . Aerodrome Control Tower
TWY . . . . . . . . . Taxiway
TX . . . . . . . . . . . Taxilane
U
U/S . . . . . . . . . . . Unserviceable
UAS . . . . . . . . . . Unmanned Aircraft System
UNL . . . . . . . . . . Unlimited
UNREL . . . . . . . Unreliable
V
VIS . . . . . . . . . . . Visibility
VOR . . . . . . . . . . VHF Omni-Directional Radio Range
VORTAC . . . . . . VOR and TACAN (collocated)
VOT . . . . . . . . . . VOR Test Facility
W
W . . . . . . . . . . . . West
or
western longitude
WB . . . . . . . . . . . Westbound
WDI . . . . . . . . . . Wind Direction Indicator
WED . . . . . . . . . Wednesday
WI . . . . . . . . . . . Within
WID . . . . . . . . . . Width
or
wide
WIP . . . . . . . . . . Work in progress
WNW . . . . . . . . . West
−
northwest
WS . . . . . . . . . . . Wind shear
WSW . . . . . . . . . West
−
southwest
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4. Operational Information System
(OIS)
a.
The FAA’s Air Traffic Control System
Command Center (ATCSCC) maintains a website
with near real
−
time National Airspace System (NAS)
status information. NAS operators are encouraged to
access the website at http://www.fly.faa.gov prior to
filing their flight plan.
b.
The website consolidates information from
advisories. An advisory is a message that is
disseminated electronically by the ATCSCC that
contains information pertinent to the NAS.
1.
Advisories are normally issued for the
following items:
(a)
Ground Stops.
(b)
Ground Delay Programs.
(c)
Route Information.
(d)
Plan of Operations.
(e)
Facility Outages and Scheduled Facility
Outages.
(f)
Volcanic Ash Activity Bulletins.
(g)
Special Traffic Management Programs.
2.
This list is not all
−
inclusive. Any time there
is information that may be beneficial to a large
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Preflight