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Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight, repealing Regulation (EC) No 482/2008, Implementing Regulations (EU) No 1034/2011, (EU) No 1035/2011 and (EU) 2016/1377 and amending Regulation (EU) No 677/2011 (Text with EEA relevance. )

Type Implementing Regulation
Publication 2017-03-08
Last updated 2026-10-04
State In force
Department European Commission, MOVE
Source EUR-Lex
articles 16
Reform history JSON API
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
Procedure
Identification
Final-approach segment (FAS) guidance Code list The name describing the type of radio navigation aid providing the final approach lateral guidance e.g. ILS, VOR, RNAV, etc. APCH
RWY Text The RWY designator of the landing and take-off direction, e.g. 27, 35L, 01R
Circling Code list Indication if a procedure is/is not a circling approach APCH
Multiple code Text A single-letter suffix, starting with the letter ‘z’, following the radio navigation aid type, shall be used if two or more procedures to the same RWY cannot be distinguished by the radio navigation aid type only, e.g.VOR y RWY 20 or VOR z RWY 20. APCH
NS limiter Text Sensor-specific information in case of a use limitation PBN only
Name Text Name of the instrument flight procedure
Plain- language designation
Basic indicator Text The basic indicator shall be the name or code names of the significant point where the standard departure route terminates. SID, STAR
Validity indicator Text The validity indicator shall be a number from 1 to 9. SID, STAR
Route indicator Text The route indicator shall be one letter of the alphabet. The letters ‘I’ and ‘O’ shall not be used. SID, STAR
Visual indication Text Indication if the route has been established for aircraft operating in accordance with VFR VFR only
Coded designation
Significant Point Text The coded designator or code names of the significant point SID, STAR
Validity indicator Text The validity indicator of the procedure SID, STAR
Route indicator Text The route indicator of the procedure SID, STAR
Procedure type Code list Indication of the type of procedure (departure, arrival, approach, other)
PBN or conventional Code list Indication if the procedure is PBN or conventional IFR only
Precision type Text The instrument procedure type; instrument approach procedures are classified as follows: (a) non-precision approach (NPA) procedure: an instrument approach procedure that utilises lateral but not vertical guidance. (b) approach procedure with vertical guidance (APV): an instrument procedure that utilises lateral and vertical guidance but does not meet the requirements established for precision-approach and -landing operations. (c) precision approach (PA) procedure: an instrument approach procedure using precision lateral and vertical guidance with minima as determined by the category of operation. APCH
Aircraft category Code list Indication of which aircraft categories the procedure is intended for
Magnetic variation Value The magnetic variation considered for the procedure design
Obstacle clearance altitude/height (OCA/H) OCA/H APCH
Aircraft category Code list Aircraft category APCH
Approach type Code list Approach type (e.g. straight-in, Cat I, Cat II, LLZ, circling, etc.), or specific navigation aid (e.g. step-down fixes), or a specific navigation specification APCH
Altitude Altitude The lowest altitude used in establishing compliance with appropriate obstacle clearance criteria APCH Essential
Height Height The lowest height above the elevation of the relevant RWY threshold or the aerodrome elevation, as applicable, used in establishing compliance with appropriate obstacle clearance criteria APCH Essential
Decision altitude/height (DA/H) DA/H APCH
Aircraft category Code list Aircraft category APCH
Approach type Code list Approach type (e.g. straight-in, circling, etc.), or specific navigation aid (e.g. step-down fixes), or a specific navigation specification APCH
Altitude Altitude A specified altitude in a 3D instrument approach operation at which a missed approach shall be initiated if the required visual reference to continue the approach is not established APCH
Height Height A specified height in a 3D instrument approach operation at which a missed approach shall be initiated if the required visual reference to continue the approach is not established APCH
Minimum descent altitude/height (MDA/H) MDA/H APCH
Aircraft category Code list Aircraft category APCH
Approach type Code list Approach type (e.g. straight-in, circling, etc.), or specific navigation aid (e.g. step-down fixes), or a specific navigation specification APCH
Altitude Altitude A specified altitude in a 2D instrument approach operation or circling approach operation below which descent shall not be initiated without the required visual reference APCH
Height Height A specified height in a 2D instrument approach operation or circling approach operation below which descent shall not be initiated without the required visual reference APCH
Minimum sector altitude (MSA) The lowest altitude that may be used and will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an area contained within a sector of a circle of 46 km (25 nm) radius centred on a radio aid to navigation IFR only
Sector start angle Angle Start angle of a sector
Sector end angle Angle End angle of a sector
Based on fix Text Centre of the MSA
Altitude Altitude The minimum altitude for each sector
Restrictions Text MSA: the lowest altitude that may be used and will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an area contained within a sector of a circle of 46 km (25 nm) radius centred on a radio aid to navigation.
Radius Value The radius of each sector
Terminal arrival altitude (TAA) The lowest altitude that will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an arc of a circle defined by a 46 km (25 nm) radius centred on the initial-approach fix (IAF) or, where there is no IAF, on the intermediate-approach fix (IF), delimited by straight lines joining the extremity of the arc to the IF; the combined TAAs associated with an approach procedure shall account for an area of 360 degrees around the IF. APCH or PBN only
Reference point Text TAA reference point (IAF or IF)
IAF Text TAA IAF reference point
IF Text TAA IF reference point
Distance to IAF Distance The distance of the TAA area boundary from the IAF
Altitude Altitude The terminal arrival altitude value
Sector start angle Angle Start angle of a sector (bearing to the TAA reference point)
Sector end angle Angle End angle of a sector (bearing to the TAA reference point)
Step-down arc Distance Radius of the inner area at a lower altitude.
Navigation specification name Text A set of aircraft and flight crew requirements needed to support PBN operations within a defined airspace; there are two kinds of navigation specifications: (a) RNP specifications: navigation specifications based on area navigation that includes the requirement for performance monitoring and alerting, designated by the prefix RNP, e.g. RNP 4, RNP APCH. (b) RNAV specifications: navigation specifications based on area navigation that does not include the requirement for performance monitoring and alerting, designated by the prefix RNAV, e.g. RNAV 5, RNAV 1. PBN only
Operating minima Text Aerodrome operating minima: the usability limits of an aerodrome for: (a) take-off, expressed in terms of RVR and/or visibility and, if necessary, cloud conditions; (b) landing in precision approach and landing operations, expressed in terms of visibility and/or RVR and DA/H, as appropriate to the category of the operation; (c) landing in approach and landing operations with vertical guidance, expressed in terms of visibility and/or RVR and DA/H; and (d) landing in non-precision approach and landing operations, expressed in terms of visibility and/or RVR, minimum descent altitude/height (MDA/H) and, if necessary, cloud conditions APCH, DEP
Temperature
Minimum temperature Value Minimum temperature reference APCH or PBN only
Maximum temperature Value Maximum temperature reference APCH or PBN only
Remote altimeter source Text Cautionary note indicating the altimetry source APCH
Proc Ref datum Text Aerodrome or landing threshold APCH
PBN requirements Specific requirements related to a PBN procedure PBN
Code list Identification of the navigation specification (RNAV 5, RNP 0.3, etc.)
Navigation specification Text Any navigation sensor limitations (global navigation satellite system (GNSS) required)
Functional requirements Text Any required functionalities described as options in the navigation specification, that is, not included in the core navigation specification (radio frequency (RF) required)
Procedure segment SID, STAR, APCH
Start Text Identification of the start point of the segment
End Text Identification of the end point, or a description of the end, of the segment
End fix functionality Code list Indication if the end fix is a fly-by point (a waypoint that requires a turn to allow tangential interception of the next segment of a route or procedure) or flyover point (a waypoint at which a turn is initiated in order to join the next segment of a route or procedure) PBN
End fix role Code list Indication of the role of the end fix missed-approach point (MAPt), IF, IAF, final-approach fix (FAF), missed approach holding fix (MAHF), etc.
Procedure altitude/height Altitude/height A specified altitude/height flown operationally above the minimum altitude/height and established to accommodate a stabilised descent at a prescribed-descent gradient/angle in the intermediate/final approach segment Certain segments of SID, STAR, APCH only Essential
Minimum obstruction clearance altitude (MOCA) Altitude The minimum altitude of a defined segment, which provides the required obstacle clearance SID, STAR, APCH
Distance Distance Geodesic distance to the nearest tenth of a kilometre or of a nautical mile between each successive designated significant point 1/100 km Essential Calculated 1/100 km or 1/100 nm 1 km or 1 nm
True bearing Bearing True track to the nearest tenth of a degree between each successive significant point SID, STAR, APCH 1/10 degree Routine Calculated 1/10 degree
Magnetic bearing Bearing Magnetic track to the nearest tenth of a degree between each successive significant point SID, STAR, APCH 1/10 degree Routine Calculated 1 degree 1 degree
Gradient Value APCH, DEP
Speed Value Speed limit at a significant point, expressed in units of 10 kt, as applicable
Controlling obstacle APCH, DEP
Type Text Indication if the obstacle is lit/unlit, type of obstacle (church/wind turbine, etc.)
Position Point Coordinates of the controlling obstacle See Section 6 ‘Obstacle data’.
Elevation: Elevation Elevation of the top of the controlling obstacle See Section 6 ‘Obstacle data’
Final-approach segment That segment of an instrument approach procedure in which alignment and descent for landing are accomplished SBAS APCH, GBAS APCH
Operation type Text A number indicating the type of the final approach segment (e.g. ‘0’ is coded for a straight-in approach procedure including offset procedures.)
Approach performance designator Text A number identifying the type of an approach (‘0’ is used to identify a localizer performance with vertical guidance (LPV) approach procedure and a ‘1’ indicates a Category I approach procedure)
SBAS provider Text Identifier of a service provider of a particular satellite-based approach system SBAS only
Reference path data selector (RPDS) Text A numerical identifier, unique on a frequency in the broadcast region and used to select the FAS data block GBAS only
Reference path identifier (RPI) Text A four-character identifier used to confirm the selection of the correct approach procedure
Landing threshold point (LTP) or fictitious threshold point (FTP) LTP/FTP
Position Point Latitude and longitude of the LTP/FTP 0.3 m (1 ft) Critical 0.0005" (0.01’)
Ellipsoidal height Elevation The height of the LTP/FTP above the WGS-84 ellipsoid 0.25 m Critical 0.1 m
Orthometric height Elevation The height of the LTP/FTP as related to the geoid and presented as an MSL elevation
Flight path alignment point (FPAP) FPAP
Position Point Latitude and longitude of the FPAP 0.3 m (1 ft) Critical 0.0005" (0.01’)
Orthometric height Elevation The height of the FPAP as related to the geoid and presented as an MSL elevation
Approach threshold crossing height (TCH) Height The designated crossing height of the flight path angle above the LTP (or FTP) 0.5 m Critical Calculated 0.05 m
Glide path angle (GPA) Value The angle of the approach path (glide path) with respect to the horizontal plane, defined in accordance with WGS-84 at the LTP/FTP 0.01°m N/a 0.01°m
Course width at threshold Value The semi-width of the lateral course width at the LTP/FTP, defining the lateral offset at which the receiver achieves full-scale deflection. N/a Critical 0.25 m
Delta length offset Distance The distance from the stop end of the RWY to the FPAP; it defines the location where lateral sensitivity changes to missed-approach sensitivity. N/a N/a 8 m
Horizontal alert limit (HAL) Value HAL SBAS only
Vertical alert limit (VAL) Value VAL SBAS only
FAS data block Text A binary string describing the FAS data block generated with an appropriate software tool; the FAS data block is a set of parameters to identify a single precision approach or an APV and define its associated approach.
CRC remainder Text An 8-character hexadecimal representation of the calculated remainder bits, used to determine the integrity of the FAS data block during transmission and storage.
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
Procedure fix
Identification Text Names, coded designators or code names given to the significant point
ATC reporting requirements Text Indication of the ATS/MET reporting requirement as ‘compulsory’, ‘on request’ or ‘NIL’
VFR reporting point Text Bridge or church name VFR
Position Point Geographical location of the fix See Note 1 See Note 1 See Note 1 See Note 1 See Note 1
Type Text Indication of the type of the fix, such as navaid, Int, waypoint
Formations
Navaid Text The station identification of the VOR/DME reference
Bearing Bearing The bearing to the VOR/DME reference if the waypoint is not collocated with it See Note 2 See Note 2 See Note 2 See Note 2 See Note 2
Distance Distance The distance from the VOR/DME reference if the waypoint is not collocated with it 1/100 km Essential Calculated 1/100 km or 1/100 nm 2/10 km (1/10 nm)
Note 1 100 m Essential Surveyed/calculated 1 sec 1 sec
3 m Essential Surveyed/calculated 1/10 sec 1 sec
Note 2 1/10 degree Routine Calculated 1/10 degree 1/10 degree
1/10 degree Essential Calculated 1/10 degree 1/10 degree
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
Procedure holding A predetermined manoeuvre that keeps the aircraft within the specified airspace while awaiting further clearance
Identification Text Identification of the holding procedure
Fix Point Geographical location that serves as a reference for a holding procedure Same as the procedure fix
Inbound course Course Inbound true course 1/10 degree
Outbound course Course Outbound true course 1/10 degree
Leg distance Distance Outbound distance of the leg 1/10 km or 1/10 nm
Leg time Value Outbound time of the leg
Limiting radial Angle Limiting radial from the VOR/DME on which the holding is based
Turn direction Value Direction of the procedure turn
Minimum altitude Altitude Minimum holding level to the nearest higher (50 m or 100 ft)/flight level 50 m Routine Calculated 50 m or 100 ft/flight level
Maximum altitude Altitude Maximum holding level to the nearest higher (50 m or 100 ft)/flight level 50 m or 100 ft/flight level
Speed Value Maximum indicated air speed 10 kt
Magnetic variation
Angle Angle The magnetic variation of the radio navigation aid of the procedure
Date Date The date on which the magnetic variation had the corresponding value
Navigation specifications name Text Name of the navigation specification – set of aircraft and aircrew requirements needed to support a navigation application within a defined airspace concept RNAV/RNP
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
Helicopter procedure specifics
Helicopter procedure title (RNAV 263) Text Identification of the helicopter procedure
Heliport crossing height (HCH) Height Heliport crossing height Essential 1 m or 1 ft 1 m or 1 ft
Initial departure fix (IDF) Point Initial departure fix DEP
Missed-approach point (MAPt) Point MAPt APCH
Direct visual segment For PinS APP: the portion of flight that connects directly the PinS to the landing location; for PinS DEP: the portion of flight that connects directly the landing location to the IDF
Track Line
Distance Distance
Bearing Angle
Crossing height Height
Manoeuvring visual segment (VS) PinS VS protected for the following manoeuvres: (a) for PinS APCH: visual manoeuvre from the MAPt around the heliport or landing location to land from a direction other than directly from the MAPt; and (b) for PinS DEP: take-off in a direction other than directly to the IDF, followed by a visual manoeuvre to join the instrument segment at the IDF APCHDEP
Centre line Angle Centre line of the take-off climb surface DEP
Manoeuvring area Polygon Area where the pilot is expected to manoeuvre visually APCH DEP
No manoeuvring area Polygon Area where manoeuvring is prohibited APCH DEP
Ingress tracks Line PinS VS protected for the following manoeuvres: (a) for PinS APCH: visual manoeuvre from the MAPt around the heliport or landing location to land from a direction other than directly from the MAPt; and (b) for PinS DEP: take-off in a direction other than directly to the IDF, followed by a visual manoeuvre to join the instrument segment at the IDF APCH DEP
HAS Height above the surface diagram APCH
Radius Distance
Height above surface Height
‘Proceed visually’ text Text Text indicating that the procedure has a ‘Proceed visually’ instruction
‘Proceed VFR’ text Text Text indicating that the procedure has a ‘Proceed VFR’ instruction
Visual segment descent angle (VSDA) Value VSDA
Ingress tracks
Length Distance
Width Distance
Bearing Angle
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
AITF Notes on charts (aeronautical information in textual format)
Non-aligned between instrument and visual slope indications Text
Missed-approach description Text Missed-approach description of the procedure
SID/STAR route description Text Textual description of the SID or STAR procedure
Missed-approach climb gradient Value The value of the missed-approach climb gradient of the approach procedure
CAT H note Text
CAT D large Text
Authorisation required (AR) Text Indication that RNP AR
Units of measurement Text
GNSS in lieu of
Communication failure Text Communication failure description
Surveillance/radar required
SID close-in obstacle note Text Indication wherever close-in obstacles exist which were not considered in the determination of the published-procedure design gradient
Offset alignment
PDG greater than 3 %

5. Radio navigation aids/systems data

Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
Radio navigation aid
Type Text Type of the radio navigation aid
Identification Text The code assigned to uniquely identify the navaid
Name Text The textual name assigned to the navaid
ILS facility classification Code list A classification based on the functional and performance capabilities of an ILS ILS
GBAS facility classification Code list A classification based on the functional and performance capabilities of the GBAS ground subsystem GBAS
GBAS approach facility designation Code list A classification based on the GBAS service volume and performance requirements for each supported approach GBAS
Area of operation Text Indication whether navigation aid serves en-route (E), aerodrome (A) or dual (AE) purposes
Aerodrome/heliport served Text The ICAO location indicator or name of the aerodromes/heliports served
RWY served Text Designator of the RWY served
Operating entity Text Name of the operating entity of the facility
Type of supported operations Code list Indication of the type of supported operation for ILS/MLS, basic GNSS, satellite-based augmentation system (SBAS), and ground-based augmentation system (GBAS)
Collocation Text Information that a navaid is collocated with another navaid
Hours of operation Schedule The hours of operation of the radio navigation aid
Magnetic variation The angular difference between the true north and the magnetic north
Angle Angle The magnetic variation at the radio navigation aid ILS/NDB See Note 1 below See Note 1 below See Note 1 below See Note 1 below See Note 1 below
Date Date The date on which the magnetic variation had the corresponding value
Station declination Angle An alignment variation of the navaid between the zero-degree radial and the true north, determined at the time the station is calibrated VOR/ILS/MLS
Zero bearing direction Text Direction of the ‘zero bearing’ provided by the station, e.g. magnetic north, true north, etc. VOR
Frequency Value Frequency or tuning frequency of the radio navigation aid
Channel Text The channel number of the radio navigation aid DME or GBAS
Position Point Geographical location of the radio navigation aid See Note 2 below See Note 2 below See Note 2 below See Note 2 below See Note 2 below
Elevation Elevation The elevation of the transmitting antenna of the DME or the elevation of the GBAS reference point DME or GBAS See Note 3 below See Note 3 below See Note 3 below See Note 3 below See Note 3 below
Ellipsoidal height Height The ellipsoidal height of the GBAS reference point GBAS
Localiser alignment
Bearing Bearing The localiser course ILS localiser 1/100 degree Essential Surveyed 1/100 degree (if true) 1 degree
Type Text The type of localiser alignment, true or magnetic ILS localiser
Zero azimuthal alignment Bearing MLS zero azimuthal alignment MLS 1/100 degree Essential Surveyed 1/100 degree (if true) 1 degree
Angle Angle The angle of the glide path of an ILS or the normal glide path angle of an MLS installation ILS GP/MLS
RDH Value The value of the ILS reference datum height (ILS RDH) ILS GP 0,5 m Critical Calculated
Localiser antenna to RWY end distance Distance ILS localiser —RWY/FATO end distance ILS localiser 3 m Routine Calculated 1 m or 1 ft As plotted
ILS glideslope antenna to TRSH distance Distance ILS glideslope antenna — threshold distance along the centre line ILS GP 3 m Routine Calculated 1 m or 1 ft As plotted
ILS marker to TRSH distance Distance ILS marker — threshold distance ILS 3 m Essential Calculated 1 m or 1 ft 2/10 km (1/10 nm)
ILS DME antenna to TRSH distance Distance ILS DME antenna — threshold distance along the centre line ILS 3 m Essential Calculated 1 m or 1 ft As plotted
MLS azimuthal antenna to RWY end distance Distance MLS azimuthal antenna — RWY/FATO end distance MLS 3 m Routine Calculated 1 m or 1 ft As plotted
MLS elevation antenna to TRHS distance Distance MLS elevation antenna — threshold distance along the centre line MLS 3 m Routine Calculated 1 m or 1 ft As plotted
MLS DME antenna to TRHS distance Distance MLS DME/P antenna — threshold distance along the centre line MLS 3 m Essential Calculated 1 m or 1 ft As plotted
Signal polarisation Code list GBAS signal polarisation (GBAS/H or GBAS/E) GBAS
Designated operational coverage (DOC) Text DOC or standard service volume (SSV) as range or service volume radius from the navaid/GBAS reference point, height and sectors, if required
Note 1 ILS Localiser 1 degree Essential Surveyed 1 degree
NDB 1 degree Routine Surveyed 1 degree
Surveyed
Note 2 Aerodrome navaid 3 m Essential Surveyed 1/10 sec As plotted
GBAS reference point 1 m Surveyed
En-route 100 m Essential Surveyed 1 sec
Surveyed
Note 3 DME 30 m (100 ft) Essential Surveyed 30 m (100 ft) 30 m (100 ft)
DME/P 3 m Essential Surveyed 3 m (10 ft)
GBAS reference point 0,25 m Essential 1 m or 1 ft
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
GNSS A worldwide position and time determination system that includes one or more satellite constellations, aircraft receivers and system integrity monitoring, augmented as necessary to support the required navigation performance for the intended operation
Name Text The name of the GNSS element (GPS, GBAS, GLONASS, EGNOS, MSAS, WAAS, etc.)
Frequency Value Frequency of the GNSS As appropriate
Service area Polygon Geographical location of the GNSS service area
Coverage area Polygon Geographical location of the GNSS coverage area
Operating authority Text Name of the operating authority of the facility
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
Aeronautical ground lights Ground lights and other light beacons designating geographical positions that are selected by the Member State as being significant
Type Text Type of beacon
Designator Text The code assigned to uniquely identify the beacon
Name Text The name of the city or town or other identification of the beacon
Intensity Value Intensity of the light of the beacon 1000 cd
Characteristics Text Information about the characteristics of the beacon
Hours of operations Schedule The hours of operation of the beacon
Position Point Geographical location of the beacon
Marine lights
Position Point Geographical location of the beacon
Visibility range Distance The visibility range of the beacon
Characteristics Text Information about the characteristics of the beacon
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
Special navigation system Stations associated with special navigation systems (DECCA, LORAN, etc.)
Type Text Type of service available (master signal, slave signal, colour)
Designator Text The code assigned to uniquely identify the special navigation system
Name Text The textual name assigned to the special navigation system
Frequency Value Frequency (channel number, basic pulse rate, recurrence rate, as applicable) of the special navigation system
Hours of operations Schedule The hours of operation of the special navigation system
Position Point Geographical location of the special navigation system 100 m Essential Surveyed/calculated
Operating entity Text Name of the operating entity of the facility
Facility coverage Text Description of the special navigation system facility coverage

6. Obstacle data

Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
Obstacle All fixed (whether temporary or permanent) and mobile obstacles or parts thereof
Obstacle identifier Text Unique identifier of the obstacle
Operator/owner Text Name and contact information of the obstacle operator or owner
Geometry type Code list An indication whether the obstacle is a point, line or polygon
Horizontal position Point or line or polygon Horizontal position of the obstacle See Note 1 below See Note 1 below See Note 1 below See Note 1 below See Note 1 below
Horizontal extent Distance Horizontal extent of the obstacle
Elevation Elevation Elevation of the highest point of the obstacle See Note 2 below See Note 2 below See Note 2 below See Note 2 below See Note 2 below
Height Height Height of the obstacle above ground See Note 2 below See Note 2 below See Note 2 below See Note 2 below See Note 2 below
Type Text Type of obstacle
Date and time stamp Date Date and time the obstacle was created
Operations Text Feature operations of the mobile obstacles
Effectivity Text Effectivity of temporary types of obstacles
Lighting
Type Text Type of lighting
Colour Text Colour of the obstacle lighting
Marking Text Type of obstacle marking
Material Text Predominant surface material of the obstacle
Note 1 Obstacles in Area 1 50 m Routine Surveyed 1 sec As plotted
Obstacles in Area 2 (including 2a, 2b, 2c, 2d, take-off flight path area, and obstacle limitation surfaces) Obstacles in Area 2 (including 2a, 2b, 2c, 2d, take-off flight path area, and obstacle limitation surfaces) 5 m Essential Surveyed 1/10 sec 1/10 sec
Obstacles in Area 3 0.5 m Essential Surveyed 1/10 sec 1/10 sec
Obstacles in Area 4 2.5 m Essential Surveyed
Note 2 Obstacles in Area 1 30 m Routine Surveyed 1 m or 1 ft 3 m (10 ft)
Obstacles in Area 2 (including 2a, 2b, 2c, 2d, take-off flight path area, and obstacle limitation surfaces) Obstacles in Area 2 (including 2a, 2b, 2c, 2d, take-off flight path area, and obstacle limitation surfaces) 3 m Essential Surveyed 1 m or 1 ft 1 m or 1 ft
Obstacles in Area 3 0.5 m Essential Surveyed 0.1 m or 0.1 ft or 0.01 m 1 m or 1 ft
Obstacles in Area 4 1 m Essential Surveyed 0.1 m

7. Geographic data

Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
Buildings Buildings (of operational significance) and other salient/prominent (aerodrome) features
Name Text Name of the building
Geometry Polygon Geographical location of the building
Built-up areas Areas covered by cities, towns and villages
Name Text Name of the built-up area
Geometry Point/polygon Geographical location of the built-up area
Railroads All railroads having landmark value
Name Text Name of the railroad
Geometry Line Geographical location of the railroads
Highways and roads All highways and roads having landmark value
Name Text Name of highways and roads
Geometry Line Geographical location of highways and roads
Landmarks Natural and cultural landmarks, such as bridges, prominent transmission lines, permanent cable car installations, wind turbines, mine structures, forts, ruins, levees, pipelines, rocks, bluffs, cliffs, sand dunes, isolated lighthouses and lightships, when considered to be of importance for visual air navigation
Characteristics Text Description of the landmark
Geometry Line Geographical location of the railroads
Political boundaries International political boundaries
Geometry Line Geographical location of the international political boundaries
Hydrography All water features comprising shorelines, lakes, rivers and streams (including those non-perennial in nature), salt lakes, glaciers and ice caps
Name Text Name of the water feature
Geometry Line/polygon Geographical location of the water feature
Wooded areas Wooded areas
Geometry Polygon Geographical location of the wooded area
Subject Property Sub-property Type Description Note Accuracy Integrity Orig. Type Pub. Res. Chart Res.
--- --- --- --- --- --- --- --- --- --- ---
Service roads Part of the aerodrome surface used by service vehicles
Geometry Polygon Geographical location of the service roads
Feature base Text Identification of the feature type affected
Identifier base Text Name of the underlying TWY, parking stand area or apron
Construction area Part of the aerodrome area under construction
Geometry Polygon Geographical location of the construction area
Area unsuitable for aircraft movement Areas unsuitable for aircraft movement
Geometry Polygon Depicted movement area permanently unsuitable for aircraft and clearly identified as such
Survey control point A monumented survey control point
Identifier number Text Special unique identifier permanently assigned to a feature instance by the data provider
Location Point Geographical location of the survey control point
Elevation Elevation Elevation of the survey control point
Aerodrome surface routing network (ASRN) node A vertex in a graph defining the ASRN
Identifier network Text Logical name comprised of a delimited list of names for one or more features associated with the ASRN feature
Identifier threshold Text Name of the feature instance
Identifier number Text Special unique identifier permanently assigned to a feature instance by a data provider
Term ref Text Terminal building associated with the feature instance
Node type Text Type of node
Cat stop Text Low-visibility operation category of the holding position
Position Point Geographical location of the ASRN node
ASRN edge A connection between the nodes in a graph, which defines the ASRN
Identifier network Text Logical name comprised of a delimited list of names for one or more features associated with the ASRN feature
Direction Text One-way or two-way directionality of the corresponding feature instance
Node1 ref Text The identifier number of the ASRN node corresponding to the start point of the edge geometry
Node2 ref Text The identifier number of the ASRN node corresponding to the end point of the edge geometry
Edge type Text Type of edge
Edge derv Text Derivation method of the edge geometry
Geometry Line Geographical location of the ASRN edge

Data types referred to in column 4 ‘Type’

Type Description Data items
Point A pair of coordinates (latitude and longitude) referenced to the mathematical ellipsoid, which define the position of the point on the surface of the Earth Latitude Longitude Horizontal reference system Units of measurement Horizontal accuracy achieved
Line Sequence of points defining a linear object Sequence of points
Polygon Sequence of points forming the boundary of the polygon; the first and last point are identical Closed sequence of points
Height The vertical distance of a level, point or an object, considered as a point, measured from a specific datum Numerical value Vertical reference system Units of measurement Vertical accuracy achieved
Altitude The vertical distance of a level, point or an object, considered as a point, measured from the MSL Numerical value Vertical reference system Units of measurement Vertical accuracy achieved
Elevation The vertical distance of a point or a level on, or affixed to, the surface of the Earth, measured from the MSL Numerical value Vertical reference system Units of measurement Vertical accuracy achieved
Distance A linear value Numerical value Units of measurement Accuracy achieved
Angle/bearing An angular value Numerical value Units of measurement Accuracy achieved
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Date A calendar date referencing a particular day or month Text
Schedule A repetitive time period, composed of one or more intervals or special dates (e.g. holidays) occurring cyclically Text
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ANNEX IV

SPECIFIC REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES

(Part-ATS)

SUBPART A — ADDITIONAL ORGANISATION REQUIREMENTS FOR PROVIDERS OF AIR TRAFFIC SERVICES (ATS.OR)

SECTION 1 — GENERAL REQUIREMENTS
ATS.OR.100 Ownership
  • (a) An air traffic services provider shall notify the competent authorities of:
  • (1) its legal status, its ownership structure and any arrangements having a significant impact on control over its assets;
  • (2) any links with organisations not involved in the provision of air navigation services, including commercial activities in which they are engaged either directly or through related undertakings, which account for more than 1 % of their expected revenue; furthermore, it shall notify any change of any single shareholding which represents 10 % or more of their total shareholding.
  • (b) An air traffic services provider shall take all necessary measures to prevent any situation of conflict of interests that could compromise the impartial and objective provision of its services.
ATS.OR.105 Open and transparent provision of service

In addition to point ATM/ANS.OR.A.075 of Annex III, the air traffic service provider shall neither engage in conduct that would have as its object or effect the prevention, restriction or distortion of competition, nor shall they engage in conduct that amounts to an abuse of a dominant position, in accordance with applicable Union and national law.

ATS.OR.110 Coordination between aerodrome operators and air traffic services providers

An air traffic services provider shall establish arrangements with the operator of the aerodrome at which it provides air traffic services to ensure adequate coordination of activities and services provided as well as exchange of relevant data and information.

ATS.OR.115 Coordination between military units and air traffic services providers

Without prejudice to Article 6 of Regulation (EC) No 2150/2005, an air traffic services provider shall ensure that its air traffic services units, either routinely or on request, in accordance with locally agreed procedures, provide appropriate military units with pertinent flight plan and other data concerning flights of civil aircraft in order to facilitate their identification.

ATS.OR.120 Coordination between meteorological services providers and air traffic services providers
  • (a) To ensure that aircraft receive the most up-to-date meteorological information for aircraft operations, an air traffic services provider shall make arrangements with the associated meteorological services provider for air traffic services personnel:
  • (1) in addition to using indicating instruments, to report, if observed by air traffic services personnel or communicated by aircraft, such other meteorological elements as may be agreed upon;
  • (2) to report as soon as possible meteorological phenomena of operational significance, if observed by air traffic services personnel or communicated by aircraft, which have not been included in the aerodrome meteorological report;
  • (3) to report as soon as possible pertinent information concerning pre-eruption volcanic activity, volcanic eruptions and information concerning volcanic ash cloud. In addition, area control centres and flight information centres shall report the information to the associated meteorological watch office and volcanic ash advisory centres (VAACs).
  • (b) An air traffic services provider shall ensure that close coordination is maintained between area control centres, flight information centres and associated meteorological watch offices such that information on volcanic ash included in NOTAM and SIGMET messages is consistent.
ATS.OR.125 Coordination between aeronautical information services and air traffic services providers
  • (a) An air traffic services provider shall provide to the relevant aeronautical information services provider the aeronautical information to be published as necessary to permit the utilisation of such air traffic services.
  • (b) To ensure that the aeronautical information services providers obtain information to enable them to provide up-to-date preflight information and to meet the need for in-flight information, an air traffic services provider and aeronautical information services provider shall make arrangements to report to the responsible aeronautical information services provider, with a minimum of delay:
  • (1) information on aerodrome conditions;
  • (2) the operational status of associated facilities, services and navigation aids within their area of responsibility;
  • (3) the occurrence of volcanic activity observed by air traffic services personnel or reported by aircraft;
  • (4) any other information considered to be of operational significance.
  • (c) Before introducing changes to systems for air navigation under its responsibility, an air traffic services provider shall:
  • (1) ensure close coordination with the aeronautical information services provider(s) concerned;
  • (2) take due account of the time needed by the aeronautical information services provider for the preparation, production and issuance of relevant material for promulgation;
  • (3) provide the information in a timely manner to the aeronautical information services provider concerned.
  • (d) An air traffic services provider shall observe the predetermined, internationally agreed aeronautical information regulation and control (AIRAC) effective dates in addition to 14 days postage time when submitting to aeronautical information services providers the raw information or data, or both, subject to the AIRAC cycle.
ATS.OR.127 Coordination by air traffic services providers in U-space airspace

Air traffic services providers shall:

  • (a) provide on a non-discriminatory basis the relevant traffic information regarding manned aircraft that is necessary as part of the common information services referred to in Commission Implementing Regulation (EU) 2021/664 ([^E0014]) for a U-Space airspace established in the controlled airspace where the air traffic service provider is designated to provide its services;
  • (b) establish the coordination procedures and communication facilities between appropriate air traffic service units, U-space service providers and, where applicable, single common information service providers permitting provision of this data.
ATS.OR.130 Time in air traffic services
  • (a) An air traffic services provider shall ensure that air traffic services units are equipped with clocks indicating the time in hours, minutes and seconds, clearly visible from each operating position in the unit concerned.
  • (b) An air traffic services provider shall ensure that air traffic services unit clocks and other time-recording devices are checked as necessary to ensure correct time to within plus or minus 30 seconds of UTC. Wherever data link communications are utilised by an air traffic services unit, clocks and other time-recording devices shall be checked as necessary to ensure correct time to within 1 second of UTC.
  • (c) The correct time shall be obtained from a standard time station or, if not possible, from another unit which has obtained the correct time from such station.
ATS.OR.135 Contingency arrangements

An air traffic services provider shall develop contingency plans as required in point ATM/ANS.OR.A.070 of Annex III in close coordination with the air traffic services providers responsible for the provision of services in adjacent portions of airspace and, as appropriate, with airspace users concerned.

ATS.OR.140 Failure and irregularity of systems and equipment

An air traffic services provider shall establish appropriate arrangements for air traffic services units to immediately report any failure or irregularity of communication, navigation and surveillance systems or any other safety-significant systems or equipment which could adversely affect the safety or efficiency of flight operations or the provision of air traffic services, or both.

ATS.OR.145 Operation of air traffic control service

An air traffic services provider shall ensure that information on aircraft movements, together with a record of ATC clearances issued to such aircraft, are so displayed as to permit ready analysis in order to maintain an efficient flow of air traffic with adequate separation between aircraft.

ATS.OR.150 Transfer of responsibility for control and transfer of communications

Air traffic services provider shall establish applicable coordination procedures for transfer of responsibility for control of flights, including transfer of communications and transfer of control points, in letters of agreement and operation manuals, as appropriate.

SECTION 2 — SAFETY OF SERVICES
ATS.OR.200 Safety management system

An air traffic services provider shall have in place a safety management system (SMS), which may be an integral part of the management system required in point ATM/ANS.OR.B.005, that includes the following components:

  • (1) Safety policy and objectives
  • (i) Management commitment and responsibility regarding safety which shall be included in the safety policy.
  • (ii) Safety accountabilities regarding the implementation and maintenance of the SMS and the authority to make decisions regarding safety.
  • (iii) Appointment of a safety manager who is responsible for the implementation and maintenance of an effective SMS;
  • (iv) Coordination of an emergency response planning with other service providers and aviation undertakings that interface with the ATS provider during the provision of its services.
  • (v) SMS documentation that describes all the elements of the SMS, the associated SMS processes and the SMS outputs.
  • (2) Safety risk management
  • (i) A process to identify hazards associated to its services which shall be based on a combination of reactive, proactive and predictive methods of safety data collection.
  • (ii) A process that ensures analysis, assessment and control of the safety risks associated with identified hazards.
  • (iii) A process to ensure that its contribution to the risk of aircraft accidents is minimised as far as is reasonably practicable.
  • (3) Safety assurance
  • (i) Safety performance monitoring and measurement means to verify the safety performance of the organisation and validate the effectiveness of the safety risk controls.
  • (ii) A process to identify changes which may affect the level of safety risk associated with its service and to identify and manage the safety risks that may arise from those changes.
  • (iii) A process to monitor and assess the effectiveness of the SMS to enable the continuous improvement of the overall performance of the SMS.
  • (4) Safety promotion
  • (i) Training programme that ensures that the personnel are trained and competent to perform their SMS duties.
  • (ii) Safety communication that ensures that the personnel are aware of the SMS implementation.
ATS.OR.205 Safety assessment and assurance of changes to the functional system
  • (a) For any change notified in accordance with point ATM/ANS.OR.A.045(a)(1), the air traffic services provider shall:
  • (1) ensure that a safety assessment is carried out covering the scope of the change, which is:
  • (i) the equipment, procedural and human elements being changed;
  • (ii) interfaces and interactions between the elements being changed and the remainder of the functional system;
  • (iii) interfaces and interactions between the elements being changed and the context in which it is intended to operate;
  • (iv) the life cycle of the change from definition to operations including transition into service;
  • (v) planned degraded modes of operation of the functional system; and
  • (2) provide assurance, with sufficient confidence, via a complete, documented and valid argument that the safety criteria identified via the application of point ATS.OR.210 are valid, will be satisfied and will remain satisfied.
  • (b) An air traffic services provider shall ensure that the safety assessment referred to in point (a) comprises:
  • (1) the identification of hazards;
  • (2) the determination and justification of the safety criteria applicable to the change in accordance with point ATS.OR.210;
  • (3) the risk analysis of the effects related to the change;
  • (4) the risk evaluation and, if required, risk mitigation for the change such that it can meet the applicable safety criteria;
  • (5) the verification that:
  • (i) the assessment corresponds to the scope of the change as defined in point (a)(1);
  • (ii) the change meets the safety criteria;
  • (6) the specification of the monitoring criteria necessary to demonstrate that the service delivered by the changed functional system will continue to meet the safety criteria.
ATS.OR.210 Safety criteria
  • (a) An air traffic services provider shall determine the safety acceptability of a change to a functional system, based on the analysis of the risks posed by the introduction of the change, differentiated on basis of types of operations and stakeholder classes, as appropriate.
  • (b) The safety acceptability of a change shall be assessed by using specific and verifiable safety criteria, where each criterion is expressed in terms of an explicit, quantitative level of safety risk or another measure that relates to safety risk.
  • (c) An air traffic services provider shall ensure that the safety criteria:
  • (1) are justified for the specific change, taking into account the type of change;
  • (2) when fulfilled, predict that the functional system after the change will be as safe as it was before the change or the air traffic services provider shall provide an argument justifying that:
  • (i) any temporary reduction in safety will be offset by future improvement in safety; or
  • (ii) any permanent reduction in safety has other beneficial consequences;
  • (3) when taken collectively, ensure that the change does not create an unacceptable risk to the safety of the service;
  • (4) support the improvement of safety whenever reasonably practicable.
ATS.OR.215 Licensing and medical certification requirements for air traffic controllers

An air traffic services provider shall ensure that air traffic controllers are properly licensed and hold a valid medical certificate, in accordance with Regulation (EU) 2015/340.

SECTION 3 — SPECIFIC HUMAN FACTORS REQUIREMENTS FOR AIR TRAFFIC CONTROL SERVICE PROVIDERS
ATS.OR.300 Scope

This section establishes the requirements to be met by the air traffic control service provider with regard to human performance in order to:

  • (a) prevent and mitigate the risk that air traffic control service is provided by air traffic controllers with problematic use of psychoactive substances;
  • (b) prevent and mitigate the negative effects of stress on air traffic controllers to ensure the safety of air traffic;
  • (c) prevent and mitigate the negative effects of fatigue on air traffic controllers to ensure the safety of air traffic.
ATS.OR.305 Responsibilities of air traffic control service providers with regard to the problematic use of psychoactive substances by air traffic controllers
  • (a) An air traffic control service provider shall develop and implement a policy, with related procedures, in order to ensure that the problematic use of psychoactive substances does not affect the provision of air traffic control service.
  • (b) Without prejudice to provisions laid down in Directive 95/46/EC of the European Parliament and of the Council ([^E0015]) and to the applicable national legislation on testing of individuals, the air traffic control service provider shall develop and implement an objective, transparent and non-discriminatory procedure for the detection of cases of problematic use of psychoactive substances by air traffic controllers. This procedure shall take into account provisions laid down in point ATCO.A.015 of Regulation (EU) 2015/340.
  • (c) The procedure in point (b) shall be approved by the competent authority.
ATS.OR.310 Stress

In accordance with point ATS.OR.200, an air traffic control service provider shall:

  • (a) develop and maintain a policy for the management of air traffic controllers' stress, including the implementation of a critical incident stress management programme;
  • (b) provide air traffic controllers with education and information programmes on the prevention of stress, including critical incident stress, complementing human factors training provided in accordance with Sections 3 and 4 of Subpart D of Annex I to Regulation (EU) 2015/340.
ATS.OR.315 Fatigue

In accordance with point ATS.OR.200, an air traffic control service provider shall:

  • (a) develop and maintain a policy for the management of air traffic controllers' fatigue;
  • (b) provide air traffic controllers with information programmes on the prevention of fatigue, complementing human factors training provided in accordance with Sections 3 and 4 of Subpart D of Annex I to Regulation (EU) 2015/340.
ATS.OR.320 Air traffic controllers' rostering system(s)
  • (a) An air traffic control service provider shall develop, implement and monitor a rostering system in order to manage the risks of occupational fatigue of air traffic controllers through a safe alternation of duty and rest periods. Within the rostering system, the air traffic control service provider shall specify the following elements:
  • (1) maximum consecutive working days with duty;
  • (2) maximum hours per duty period;
  • (3) maximum time providing air traffic control service without breaks;
  • (4) the ratio of duty periods to breaks when providing air traffic control service;
  • (5) minimum rest periods;
  • (6) maximum consecutive duty periods encroaching the night time, if applicable, depending upon the operating hours of the air traffic control unit concerned;
  • (7) minimum rest period after a duty period encroaching the night time;
  • (8) minimum number of rest periods within a roster cycle.
  • (b) An air traffic control services provider shall consult those air traffic controllers who will be subject to the rostering system, or, as applicable, their representatives, during its development and its application, to identify and mitigate risks concerning fatigue which could be due to the rostering system itself.
SECTION 4
REQUIREMENTS FOR COMMUNICATIONS
ATS.OR.400 Aeronautical mobile service (air–ground communications) – general
  • (a) An air traffic services provider shall use voice or data link, or both, in air–ground communications for air traffic services purposes.
  • (b) When air-ground voice communications are based on 8,33 kHz channel spacing, an air traffic services provider shall ensure that:
  • (1) all items of equipment for air–ground voice communications include the 8,33 kHz channel spacing capability and are able to tune to 25 kHz spaced channels;
  • (2) all voice frequency assignments have the 8,33 kHz channel spacing capability;
  • (3) the procedures applicable to aircraft equipped with radios having the 8,33 kHz channel spacing capability and to aircraft which are not equipped with such equipment, subject to transfer between air traffic services units, are specified in the letters of agreement between those ATS units;
  • (4) aircraft not equipped with radios having the 8,33 kHz channel spacing capability can be accommodated, provided they can be safely handled within the capacity limits of the air traffic management system on UHF or on 25 kHz frequency assignments; and
  • (5) it communicates, on an annual basis, to the Member State that has designated it their plans for the handling of State aircraft which are not equipped with radios having the 8,33 kHz channel spacing capability, taking into account the capacity limits associated with the procedures published by the Member States in their national aeronautical information publications (AIPs).
  • (c) When direct pilot–controller two-way voice or data link communications are used for the provision of air traffic control service, recording facilities shall be provided by the air traffic services provider on all such air–ground communication channels.
  • (d) When direct air–ground two-way voice or data link communications are used for the provision of flight information service, including aerodrome flight information service (AFIS), recording facilities on all such air–ground communication channels shall be provided by the air traffic services provider, unless otherwise prescribed by the competent authority.
ATS.OR.405 Use and availability of the VHF emergency frequency
  • (a) As laid down in Article 3d, the VHF emergency frequency (121,500 MHz) shall be used for genuine emergency purposes, including any of the following:
  • (1) to provide a clear channel between aircraft in distress or emergency and a ground station when the normal channels are being utilised for other aircraft;
  • (2) to provide a VHF communication channel between aircraft and aerodromes, not normally used by international air services, in case of an emergency condition arising;
  • (3) to provide a common VHF communication channel between aircraft, either civil or military, and between such aircraft and surface services, involved in common search and rescue operations, prior to changing when necessary to the appropriate frequency;
  • (4) to provide air-ground communication with aircraft when airborne equipment failure prevents the use of the regular channels;
  • (5) to provide a channel for the operation of emergency locator transmitters (ELTs), and for communication between survival craft and aircraft engaged in search and rescue operations;
  • (6) to provide a common VHF channel for communication between civil aircraft and intercepting aircraft or intercept control units and between civil or intercepting aircraft and air traffic services units in the event of interception of the civil aircraft.
  • (b) An air traffic services provider shall provide the frequency 121.500 MHz at:
  • (1) all area control centres and flight information centres;
  • (2) aerodrome control towers and approach control units serving international aerodromes and international alternate aerodromes;
  • (3) any additional location designated by the competent authority, where the provision of that frequency is considered necessary to ensure immediate reception of distress calls or to serve the purposes specified in point (a).
ATS.OR.410 Aeronautical mobile service (air-ground communications) – flight information service
  • (a) An air traffic services provider shall ensure, to the practicable extent and as approved by the competent authority, that air-ground communication facilities enable two-way communications to take place between a flight information centre and appropriately equipped aircraft flying anywhere within the flight information region.
  • (b) An air traffic services provider shall ensure that air-ground communication facilities enable direct, rapid, continuous and static-free two-way communications to take place between an AFIS unit and appropriately equipped aircraft operating within the airspace referred to in point ATS.TR.110(a)(3).
ATS.OR.415 Aeronautical mobile service (air–ground communications) – area control service

An air traffic services provider shall ensure that:

  • (a) air–ground communication facilities enable two-way voice communications to take place between a unit providing area control service and appropriately equipped aircraft flying anywhere within the control area or areas; and

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