The NOTAM Code is provided to enable the coding of information regarding :

  • the establishment,
  • condition or change of radio aids,
  • aerodromes and lighting facilities,
  • dangers to aircraft,
  • search and rescue facilities.

The NOTAM Code is a comprehensive description of information contained in article NOTAM.


Example covered in the article: NOTAM

Q) LFBB/QMPLC/IV/ BO/ A/000/999/4544N00013E005

All NOTAM Code groups contain a total of five letters. The first letter of the code group is always the letter Q to indicate that it is a code abbreviation for use in the composition of NOTAM. The letter Q has been chosen to avoid conflict with any assigned radio call sign.

The second and third letters identify the subject reported upon and the fourth and fifth letters denote its status of operation.


Lighting facilities (L)

LA → Approach lighting system (specify runway and type)
LB → Aerodrome beacon
LC → Runway centre line lights (specify runway)
LD → Landing direction indicator lights
LE → Runway edge lights (specify runway)
LF → Sequenced flashing lights (specify runway)
LG → Pilot-controlled lighting
LH → High intensity runway lights (specify runway)
LI → Runway end identifier lights (specify runway)
LJ → Runway alignment indicator lights (specify runway)
LK → Category II components of approach lighting system (specify runway)
LL → Low intensity runway lights (specify runway)
LM → Medium intensity runway lights (specify runway)
LP → Precision approach path indicator (specify runway)
LR → All landing area lighting facilities
LS → Stopway lights (specify runway)
LT → Threshold lights (specify runway)
LU → Helicopter approach path indicator
LV → Visual approach slope indicator system (specify type and runway)
LW → Heliport lighting heliport
LX → Taxiway centre line lights (specify taxiway)
LY → Taxiway edge lights (specify taxiway)
LZ → Runway touchdown zone lights (specify runway)

Movement and landing area (M)

MA → Movement area
MB → Bearing strength (specify part of landing area or movement area)
MC → Clearway (specify runway)
MD → Declared distances (specify runway)
MG → Taxiing guidance system
MH → Runway arresting gear (specify runway)
MK → Parking area
MM → Daylight markings (specify threshold, centre line, etc.)
MN → Apron
MO → Stopbar (specify taxiway)
MP → Aircraft stands (specify)
MR → Runway (specify runway)
MS → Stopway (specify runway)
MT → Threshold (specify runway)
MU → Runway turning bay (specify runway)
MW → Strip/shoulder (specify runway)
MX → Taxiway(s) (specify)
MY → Rapid exit taxiway (specify)

Facilities and services (F)

FA → Aerodrome
FB → Friction measuring device (specify type)
FC → Ceiling measurement equipment
FD → Docking system (specify AGNIS, BOLDS, etc.)
FE → Oxygen (specify type)
FF → Firefighting and rescue
FG → Ground movement control
FH → Helicopter alighting area/platform
FI → Aircraft de-icing (specify)
FJ → Oils (specify type)
FL → Landing direction indicator
FM → Meteorological service (specify type)
FO → Fog dispersal system
FP → Heliport
FS → Snow removal equipment
FT → Transmissometer (specify runway and, where applicable, designator(s) of transmissometer(s))
FU → Fuel availability
FW → Wind direction indicator
FZ → Customs/immigration

Airspace organization (A)

AA → Minimum altitude (specify en-route/crossing/safe)
AC → Control zone
AD → Air defence identification zone
AE → Control area
AF → Flight information region
AH → Upper control area
AL → Minimum usable flight level
AN → Area navigation route
AO → Oceanic control area
AP → Reporting point (specify name or coded designator)
AR → ATS route (specify)
AT → Terminal control area
AU → Upper flight information region
AV → Upper advisory area
AX → Significant point
AZ → Aerodrome traffic zone

Air traffic and VOLMET services (S)

SA → Automatic terminal information service
SB → ATS reporting office
SC → Area control centre
SE → Flight information service
SF → Aerodrome flight information service
SL → Flow control centre
SO → Oceanic area control centre
SP → Approach control service
SS → Flight service station
ST → Aerodrome control tower
SU → Upper area control centre
SV → VOLMET broadcast
SY → Upper advisory service (specify)

Air traffic procedures (P)

PA → Standard instrument arrival (specify route designator)
PB → Standard VFR arrival
PC → Contingency procedures
PD → Standard instrument departure (specify route designator)
PE → Standard VFR departure
PF → Flow control procedure
PH → Holding procedure
PI → Instrument approach procedure (specify type and runway)
PK → VFR approach procedure
PL → Flight plan processing, filing and related contingency
PM → Aerodrome operating minima (specify procedure and amended minimum)
PN → Noise operating restrictions
PO → Obstacle clearance altitude and height (specify procedure)
PR → Radio failure procedure
PT → Transition altitude or transition level (specify)
PU → Missed approach procedure (specify runway)
PX → Minimum holding altitude (specify fix)
PZ → ADIZ procedure

Communications and surveillance facilities (C)

CA → Air/ground facility (specify service and frequency)
CB → Automatic dependent surveillance — broadcast (details)
CC → Automatic dependent surveillance — contract (details)
CD → Controller-pilot data link communications (details)
CE → En-route surveillance radar
CG → Ground controlled approach system
CL → Selective calling system
CM → Surface movement radar
CP → Precision approach radar (specify runway)
CR → Surveillance radar element of precision approach radar system (specify wavelength)
CS → Secondary surveillance radar
CT → Terminal area surveillance radar

Instrument and microwave landing systems (I)

IC → Instrument landing system (specify runway)
ID → DME associated with ILS
IG → Glide path (ILS) (specify runway)
II → Inner marker (ILS) (specify runway)
IL → Localizer (ILS) (specify runway)
IM → Middle marker (ILS) (specify runway)
IN → Localizer (not associated with ILS)
IO → Outer marker (ILS) (specify runway)
IS → ILS Category I (specify runway)
IT → ILS Category II (specify runway)
IU → ILS Category III (specify runway)
IW → Microwave landing system (specify runway)
IX → Locator, outer (ILS) (specify runway)
IY → Locator, middle (ILS) (specify runway)

GNSS services (G)

GA → GNSS airfield-specific operations (specify operation)
GW → GNSS area-wide operations (specify operation)

Terminal and en-route navigation facilities (N)

NA → All radio navigation facilities (except...)
NB → Non-directional radio beacon
ND → Distance measuring equipment
NF → Fan marker
NL → Locator (specify identification)
NX → Direction-finding station (specify type and frequency)

Airspace restrictions (R)

RA → Airspace reservation (specify)
RD → Danger area (specify)
RM → Military operating area
RO → Overflying of . . . (specify)
RP → Prohibited area (specify )
RR → Restricted area
RT → Temporary restricted area (specify area)

Warnings (W)

WA → Air display
WB → Aerobatics
WC → Captive balloon or kite
WD → Demolition of explosives
WE → Exercises (specify)
WF → Air refuelling
WG → Glider flying
WH → Blasting
WJ → Banner/target towing
WL → Ascent of free balloon
WM → Missile, gun or rocket firing
WP → Parachute jumping exercise, paragliding or hang gliding
WR → Radioactive materials or toxic chemicals (specify)
WS → Burning or blowing gas
WT → Mass movement of aircraft
WU → Unmanned aircraft
WV → Formation flight
WW → Significant volcanic activity
WY → Aerial survey
WZ → Model flying

Other Information (O)

OA → Aeronautical information service
OB → Obstacle (specify details)
OE → Aircraft entry requirements
OL → Obstacle lights on ... (specify)
OR → Rescue coordination centre


Availability (A)

AC → Withdrawn for maintenance
AD → Available for daylight operation
AF → Flight checked and found reliable
AG → Operating but ground checked only, awaiting flight check
AH → Hours of service are now ...(specify)
AK → Resumed normal operation
AL → Operative (or reoperative) subject to previously published limitations/conditions
AM → Military operations only
AN → Available for night operation
AO → Operational
AP → Available, prior permission required
AR → Available on request
AS → Unserviceable
AU → Not available (specify reason if appropriate)
AW → Completely withdrawn
AX → Previously promulgated shutdown has been cancelled

Changes (C)

CA → Activated
CC → Completed
CD → Deactivated
CE → Erected
CF → Operating frequency(ies) changed to
CG → Downgraded to
CH → Changed
CI → Identification or radio call sign changed to
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 (H)

HA → Braking action is ...

  • 1) Poor
  • 2) Medium/Poor
  • 3) Medium
  • 4) Medium/Good
  • 5) Good

HB → Friction coefficient is . . . (specify friction measuring device used)
HC → Covered by compacted 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 (specify)
HI → Covered by ice
HJ → Launch planned . . . (specify balloon flight identification or project code name, launch site, planned period of launch(es) — date/time, expected climb direction, estimated time to pass 18 000 m (60 000 ft), or reaching cruise level if at or below 18 000 m (60 000 ft), together with estimated location)
HK → Bird migration in progress (specify direction)
HL → Snow clearance 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 . . . (specify balloon flight identification or project code name)
HR → Standing water
HS → Sanding in progress
HT → Approach according to signal area only
HU → Launch in progress . . . (specify balloon flight identification or project code name, launch site, date/time of launch(es), estimated time passing 18 000 m (60 000 ft), or reaching cruising level if at or below 18 000 m (60 000 ft), together with estimated location, estimated date/time of termination of the flight and planned location of ground contact, when applicable)
HV → Work completed
HW → Work in progress
HX → Concentration of birds
HY → Snow banks exist (specify height)
HZ → Covered by frozen ruts and ridges

Limitations (L)

LA → Operating on auxiliary power supply
LB → Reserved for aircraft based therein
LC → Closed
LD → Unsafe
LE → Operating without 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 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 (XX)

XX → Plain language

See also


  • ICAO - Documentation 8400 Abbreviations and Codes PANS-ABC


  • VID 529524 - Creation


  • 19:12, 5 January 2022


  • This documentation is copyrighted as part of the intellectual property of the International Virtual Aviation Organisation.


  • The content of this documentation is intended for aviation simulation only and must not be used for real aviation operations.