Q-code
Q-code 2--3AIRSPACE ORGANIZATION
AA - Minimum Altitude
AC - Control Zone
AD - ADIZ
AE - Control Area (CTA)
AF - Flight Information Region (FIR)
AG - Facilities and Services
AH - Upper Control Area
AL - Minimum Usable Flight Level
AN - Area Navigation Route
AO - Oceanic Control Area (OCA)
AP - Reporting Point
AR - ATS Route
AT - Terminal Control Area (TMA)
AU - Upper Flight Information Region (UIR)
AV - Upper Advisory Area
AX - Intersection (INT)
AZ - Aerodrome Traffic Zone (ATZ)
AIRSPACE RESTRICTION
RA - Airspace Reservation
RC - Airspace Organization
RD - Danger Area
RM - Military Operating Area
RO - Overflying Of...
RP - Prohibited Area
RR - Restricted Area
RT - Temporary Restricted Area
AIR TRAFFIC PROCEDURE
PA - Standard Instrument Arrival (STAR)
PB - Standard VFR Arrival
PD - Standard Instrument Departure (SID)
PE - Standard VFR Departure
PF - Flow Control Procedure
PH - Holding Procedure
PI - Instrument Approach Procedure
PK - VFR Approach Procedure
PL - Obstacle Clearance Limit
PM - Aerodrome Operating Minima
PO - Obstacle Clearance Altitude
PP - Obstacle Clearance Height
PR - Radio Failure Procedures
PT - Transition Altitude
PU - Missed Approach Procedure
PX - Minimum Holding Altitude
PZ - ADIZ Procedure
AIR TRAFFIC AND VOLMET SERVICE
SA - Automated Terminal Information Svc (ATIS)
SB - ATS Reporting Office
SC - Area Control Office (ACC)
SE - Flight Information Service (FIS)
SF - Aerodrome Flight Information Svc (AFIS)
SL - Flow Control Center
SO - Oceanic Area Control Center (OAC)
SP - Approach Control Service
SS - Flight Service Station
ST - Aerodrome Control Tower (TWR)
SU - Upper Area Control Center (UAC)
SV - VOLMET Broadcast
SY - Upper Advisory Service
COMMUNICATION AND FACILITIES
CA - Air/Ground Facility
CD - Controller Pilot Datalink Comm and ADS
CE - Enroute Surveillance Radar
CG - Ground Controlled Approach System (GCA)
CL - Selective Calling System (SELCAL)
CM - Surface Movement Radar
CO - Communications and Radar Facilities
CP - Precision Approach Radar (PAR)
CR - Surveillance Radar Element of PAR
CS - Secondary Surveillance Radar (SSR)
CT - Terminal Area Surveillance Radar (TAR)
FACILITIES AND SERVICES
FA - Aerodrome
FB - Braking Action Measurement Equipment
FC - Ceiling Measurement Equipment
FD - Docking System
FE - Oxygen
FF - Fire Fighting and Rescue
FG - Ground Movement Control
FH - Helicopter Lighting Area/Platform
FJ - Oils
FL - Landing Direction Indicator
FM - Meteorological Service
FO - Fog Dispersal System
FP - Heliport
FS - Snow Removal Equipment
FT - Transmissionmeter
FU - Fuel Availability
FW - Wind Direction Indicator
FZ - Customs
INSTRUMENT AND MICROWAVE LANDING SYESTEM
IC - Instrument Landing System
ID - DME Associated with ILD
IG - Glide Path (ILS)
II - Inner Marker
IL - Localizer (ILS)
IM - Middle Marker (ILS)
IN - Localizer (not associated with ILS)
IO - Outer Marker (ILS)
IS - ILS Category I
IT - ILS Category II
IU - ILS Category III
IW - Microwave Landing System (MLS)
IX - Locator, Outer (ILS)
IY - Locator, Middle (ILS)
LIGHTING FACILITIES
LA - Approach Light
LB - Aerodrome Beacon
LC - Runway Edge Light
LD - Landing Direction Indicator Lights
LE - Runway Edge Lights
LF - Sequenced Flashing Lights
LH - High Intensity Runway Lights
LI - Runway End Identifier Lights
LJ - Runway Alignment Indicator Lights
LK - Category II Components of ALS
LL - Low Intensity Runway Lights
LM - Medium Intensity Runway Lights
LP - Precision Approach Path Indicator (PAPI)
LR - All Landing Area Lighting
LS - Stopway Lights
LT - Threshold Lights
LU - Helicopter approach path indicator
LV - Visual Approach Slope Indicator System (VASI)
LW - Heliport Lighting
LX - Taxiway Centerine Lights
LY - Taxiway Edge Lights
LZ - Runway Touchdown Zone Lights
MOVEMENT AND LANDING AREA
MA - Movement Area
MB - Bearing Strength
MC - Clearway
MD - Declared Distance
MG - Taxiing Guidance System
MH - Runway Arresting Gear
MK - Parking Area
MM - Daylight Markings
MN - Apron
MP - Aircraft Stands
MR - Runway
MS - Stopway
MT - Threshold
MU - Runway Turning Bay
MW - Strip
MX - Taxiway(s)
NAVIGATION WARNING
WA - Air Display
WB - Aerobatics
WC - Captive Balloon or Kite
WD - Demolition of Explosives
WE - Exercises
WF - Air Refueling
WG - Glider Flying
WJ - Banner/Target Towing
WL - Ascent of Free Balloon
WM - Missle, Gun or Rocket Firing
WO - Miscellaneous Warnings
WP - Parachute Jumpint Exercise (PJE)
WR - Radioacitve or Toxic Materials
WS - Burning or Blowing Gas
WT - Mass Movement of Aircraft
WV - Formation Flight
WW - Significant Volcanic Activity
WZ - Model Flying
WX - Other
OTHER INFORMATION
OA - Aeronautical Information Services (AIS)
OB - Obstacle
OE - Aircraft Entry Requirements
OL - Obstacle Lights on...
OR - Rescue Coordination Center
TERMINAL AND ENROUTE NAVIGATION FACILITIES
NA - All Radio Nav Facilities (except...)
NB - NDB
NC - DECCA
ND - Distance Measuring Equipment (DME)
NF - Fan Marker
NG - Global Navigation System
NL - Locator
NM - VOR/DME
NN - TACAN
NO - OMEGA
NT - VORTAC
NV - VOR
NX - Direction Finding Station
OTHER
TT - Trigger
XX - Plain Language Following
Q-code 4--5
AVAILABILITY
AC - Withdrawn for Maintenance
AD - Available for Daylight Operations
AF - Flight Checked and Found Reliable
AG - Operating but Ground Checked Only
AH - Hours of Service are Now
AK - Resumed Normal Operations
AL - Operative (Reoperative) Subject to Limits
AM - Military Operations Only
AN - Available for Night Operations
AO - Operational
AP - Available, Prior Permission Required
AR - Available Upon Request
AS - Unserviceable
AU - Not Available
AW - Completely Withdrawn
AX - Previously Promulgated Showdown Cancelled
CHANGES
CA - Activated
CC - Completed
CD - Deactivated
CE - Erected
CF - Operating Frequency (ies) Changed to
CG - Downgraded to
CH - Changed
CI - Identification or Radio Callsign
CL - Realigned
CM - Displaced
CN - Cancelled
CO - Operating
CP - Operating on Reduced Power
CR - Temporarily Replaced by
CS - Installed
CT - On Test, DO NOT USE
HAZARD CONDITIONS
HA - Braking Action is
HB - Braking Coefficient is
HC - Covered by Complacted Snow to a Depth of
HD - Covered by Dry Snow to a Depth of
HE - Covered by Water to a Depth of
HF - Totally Free of Snow and Ice
HG - Grass Cutting in Progress
HH - Hazard Due to
HI - Covered by Ice
HJ - Launch Planned
HK - Bird Migration in Progress
HL - Snow Clearnance Completed
HM - Marked by
HN - Covered by Wet Snow or Slush to a Depth of
HO - Obscured by Snow
HP - Snow Clearance in Progress
HQ - Operation cancelled
HR - Standing Water
HS - Standing in Progress
HT - Approach According to Signal Area Only
HU - Launch in Progress
HV - Work Completed
HW - Work in Progress
HX - Concentration of Birds
HY - Snow Bank Exists
HZ - Covered by Frozen Ruts and Ridges
LIMITATIONS
LA - Operating on Auxiliary Power Only
LB - Reserved for Aircraft Based Herein
LC - Closed
LD - Unsafe
LE - Operating with Auxiliary Power Supply
LF - Interference From
LG - Operating without Identification
LH - Unserviceable for Aircraft Heavier than
LI - Closed to IFR Operations
LK - Operating as a Fixed Light
LL - Usable for a Length of ... and Width of ...
LN - Closed to all Night Operations
LP - Prohibited to
LR - Aircraft Restricted to Runways and Taxiways
LS - Subject to Interruption
LT - Limited to
LV - Closed to VFR Operations
LW - Will Take Place
LX - Operating but Caution Advised Due to ...
OTHER
TT - Trigger
XX - Plain Language Following
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