CODE_TYPE_PROTECT_AREA_RWY Format: ALPHA(1,5)
	A code indicating the type of protection area for a runway For example, clearway, obstacle free zone, ILS protection area, etc..
	Allowable values: CWY [Clearway.] SAFE [Runway End Safety Area.] OFZ [Obstacle Free Zone.] OFS [Obstacle Free Surface.] ILS [ILS Protection Area.] OTHER
CODE_TYPE_REL_AS Format: CHARACTER1(1,12)
	A code indicating how the two airspace are associated together.
	Allowable values: TIME-DIST [Working (activation) hours of associated AIRSPACE must not overlap.] OTHER
CODE_TYPE_RESTR Format: ALPHA(1,1)
	A code indicating if the restriction is an interdiction or a mandatory routing.
	Allowable values: F [Forbidden.] M [Mandatory.] C [Closed for cruising.] [note: It is allowed to climb or descend through the levels associated with the restriction but it is not allowed to fly straight and level on the said levels, in any part of the route. .]
CODE_TYPE_RTE Format: ALPHA(1,10)
	The type of the route from the navigation point of view. For example, conventional, RNAV, etc..
	Allowable values: CONV [Conventional route.] RNAV [Area navigation route..] DCTATS [DCT or ATS..] TRUNK [Trunk route.] POLAR [Polar route..] SSN [Supersonic route..] TACAN [TACAN route..] ADV [Advisory route..] OTHER
CODE_TYPE_SEG_PATH Format: ALPHA(3,5)
	A code indicating the type of segment path.
	Allowable values: GRC [Great Circle.] RHL [Rhumbline.] GDS [Geodesic.]
CODE_TYPE_SER Format: CHARACTER1(1,10)
	Type of a service such as Flight Information etc.
	Allowable values: ACS [Area Control Service.] ADS [Automatic Dependent Surveillance service.] ADVS [Advisory service.] AFIS [Aerodrome Flight Information Service.] AFS [Aeronautical Fixed Service.] AIS [Aeronautical Information Service.] ALRS [Alerting Service.] AMS [Aeronautical Mobile Service.] AMSS [Aeronautical Mobile Satellite Service.] APP [Approach Control Service for both Arrival AND Departure.] APP-ARR [Approach Control Service for Arrivals only.] APP-DEP [Approach Control Service for Departures only.] ARTCC [Air Route Traffic Control Centre Service.] ATC [Air Traffic Control service.] ATFM [Air Traffic Flow Management service.] ATIS [Automated Terminal Information Service.] ATIS-ARR [Automated Terminal Information Service for Arriving Traffic.] ATIS-DEP [Automated Terminal Information Service for Departing Traffic.] ATM [Air Traffic Management service.] ATS [Air Traffic Service.] BOF [Briefing service.] [note: Not ICAO listed but nonetheless used. .] BS [commercial Broadcasting Service.] COM [Communications service.] CTAF [Common Traffic Advisory Frequency Service.] DVDF [Doppler VDF Service.] EFAS [En-route Flight Advisory Service.] FCST [Forecasting service.] FIS [Flight Information Service.] FISA [Automated FIS.] FSS [Flight Service Station Service.] GCA [Ground Controlled Approach service.] OAC [Oceanic Area Control service.] NOF [International NOTAM service.] MET [Meteorological service.] PAR [Precision Approach Radar service.] RAC [Rules of the Air and Air Traffic Services.] RADAR [Radar service.] RAF [Regional Area Forecasting service.] RCC [Rescue Co-ordination service.] SAR [Search And Rescue service.] SIGMET [SIGMET service.] SMC [Surface Movement Control service.] SMR [Surface Movement Radar service.] SRA [Surveillance Radar Approach service.] SSR [Secondary Surveillance Radar service.] TAR [Terminal Area Radar service.] TWEB [Transcribed Weather Broadcast Service.] TWR [Aerodrome Control Tower Service.] UAC [Upper Area Control service.] UDF [UHF Direction-Finding service.] VDF [VHF Direction-Finding service.] VOLMET [VOLMET service.] VOT [VOR Test Facility.] OVERFLT [Overflight Clearance Service.] [note: A service providing crossing permissions through a given airspace. .] ENTRY [Entry Clearance Service.] [note: A service providing entry permissions into a given airspace. .] EXIT [Exit Clearance Service.] [note: A service providing exit permissions from a given airspace. .] INFO [Information Provision Service.] [note: A service providing information about activities taking place at a location, such as inside an airspace. .] OTHER
CODE_TYPE_SER_AD Format: ALPHA(1,8)
	A code indicating the type of ground service at an aerodrome/heliport. For example, customs, immigration, health and sanitation, handling, security, de-icing, hangaring, repairing, rescue, disabled aircraft removal, fire fighting, clearing, fuelling.
	Allowable values: FIRE [fire fighting service.] CUST [customs and immigration service.] SAN [health and sanitation service.] FUEL [fuelling service.] HAND [handling service.] CLEAR [clearing/removal.] SECUR [security service.] DEICE [de-icing service.] HANGAR [hangaring service.] [note: Hangaring service .] REPAIR [repairing service.] VET [veterinary service.] OTHER
CODE_TYPE_SER_SPEC_NAV Format: ALPHA(1,5)
	A code indicating the type of service provided by a station in a special navigation system chain, depending on the type of the system.
	Allowable values: M [Master station of a LORAN or DECCA chain.] S [LORAN slave.] RS [Red Slave station of a DECCA chain.] GS [Green Slave station of a DECCA chain.] PS [Purple Slave station of a DECCA chain.] OTHER
CODE_TYPE_SID Format: ALPHANUMERIC(1,5)
	A code indicating a type of Standard Instrument Departure (SID). For example, SID, RNAV SID, Engine out SID or FMS SID.
	Allowable values: O [Engine Out SID.] C [Conventional SID.] R [RNAV SID.] F [FMS SID.] OTHER
CODE_TYPE_SPEC_NAV_SYS Format: ALPHA(1,8)
	A code indicating a type of special navigation system. For example, LORAN, DECCA, GNSS, etc.
	Allowable values: LORANA [Long range (area) navigation system 'A'.] LORANC [Long range (area) navigation system 'C'.] LORAND [Long range (area) navigation system 'D'.] DECCA [Short and medium range (area) navigation system DECCA.] GNSS [Global Navigation Satellite System.] OTHER