Article 1
The technical and operational specifications of version 3 of the EGNOS system are set out in the Annex.
Commission Implementing Decision (EU) 2015/1183 of 17 July 2015 setting out the necessary technical and operational specifications for implementing version 3 of the EGNOS system
Commission Implementing Decision (EU) 2015/1183 of 17 July 2015 setting out the necessary technical and operational specifications for implementing version 3 of the EGNOS system
Data as of 2026-07-04 · Compiled from an official source version. Later amendments or repeals may not be reflected; the official text prevails. · Read the official text ↗
Article 2
This Decision shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union .
Supplementary provisions
ANNEXSupplementary provisions
ANNEX TECHNICAL AND OPERATIONAL SPECIFICATIONS 1. Main characteristics of EGNOS v3 which are maintained or improved from, or added to EGNOS v2 EGNOS v2 EGNOS v3 Receivers modes — Mono-frequency mono-constellation: GPS L1 — Mono-frequency mono-constellation: GPS L1 — Dual-frequency mono-constellation: GPS L1/L5 or Galileo E1/E5a — Dual-frequency dual-constellation: GPS L1/L5 + Galileo E1/E5a Specific services for Aviation — En-route/non-precision approach — Approach with vertical guidance APV-I — LPV-200 approach — En-route/non-precision approach — Approach with vertical guidance APV-I — LPV-200 approach — CAT-I precision approach Specific services for Maritime n.a. — Oceanic areas — Navigation in harbour entrance, harbour approaches and coastal waters Capability of the system to be replicated yes yes Compatibility of service performance at user level vs. previous version n.a. yes Limitation of services ( 1 ) — Safety of Life area limited to [40W, 40E], [20N, 70N] — Maximum number of stations limited to 60 None ( 2 ) 2. Open service technical and operational specifications Open service Lateral accuracy (95 %) 3 m Vertical accuracy (95 %) 4 m OS availability 0,99 Service Area EU-MS + Norway and Switzerland Guarantee of service No Accessibility — Through compatible receivers within the EGNOS service area — No specific authorisation/certification required Timing service EGNOS Network time to UTC system time accuracy 20 ns 3sigma EGNOS Network time to GPS system time accuracy Maximum 50 ns Availability of timing service 99 % Guarantee of service no Accessibility — Through compatible receivers within the EGNOS service area — No specific authorisation/certification required 3. EGNOS Data Access service (EDAS) technical and operational specifications EDAS Service specifications Products provided directly by the system RIMS raw data EGNOS broadcast message data EGNOS health status data Latency ( 3 ) 2 sec Availability 0,999 Accessibility Products provided to end users through specific service providers connected to the EGNOS server Server specifications Secured architecture for worldwide access Sufficient bandwidth connectivity 4. Safety-of-Life service technical and operational specifications 4.1. Aviation service ( 4 ) En-route — Non-Precision Approach Approach with Vertical Guidance APV-I (legacy service) LPV 200 Approach Cat I Precision Approach Standards Annexe V, point 3(a) of Implementing Regulation (EU) No 1035/2011, as applicable Lateral accuracy 220 m 16 m 16 m 16 m Vertical accuracy Not applicable 20 m 4 m 4 m VNSE — fault-free conditions N/A N/A 10 m with probability of 10 –7 /150 s N/A VNSE — system failure conditions N/A N/A 15 m with probability of 10 –5 /150 s N/A Integrity risk 1,10 –7 /hour 2,10 –7 /150 s 2,10 –7 /150 s 2,10 –7 /150 s Time To Alarm 10 s 10 s 6 s 6 s HAL 556 m 40 m 40 m 40 m VAL Not applicable 50 m 35 m 10 m Continuity risk 1,10 –5 /hour 8,10 –6 /15 s 8,10 –6 /15 s 8,10 –6 /15 s SoL Service ( 5 ) availability 0,999 0,99 0,99 to 0,999 0,99 Service area Flight information regions (FIRs) of EU-MS + Norway and Switzerland Landmasses ( 6 ) of EU-MS + Norway and Switzerland Landmasses of EU-MS + Norway and Switzerland Landmasses of EU-MS + Norway and Switzerland Target service area extension Article 2(5) of Regulation (EU) No 1285/2013 Performance of reversion modes EGNOS V3 shall deliver LPV 200 ( 7 ) service level over its Service Area with 99 % availability when reverting to the use of the Galileo constellation only. EGNOS V3 shall deliver LPV 200 service level in the land masses of the Service Area with 99 % availability upon complete loss of L5/E5a frequency at user level. Guarantee of service Yes Accessibility Through SBAS-compatible receivers 4.2. Maritime service ( 8 ) Navigation in harbour entrances, Harbour approaches and coastal waters Standards IMO Resolution A.915(22) and A.1046(27) Lateral accuracy 10 m Vertical accuracy Not applicable Integrity risk 1,10 –5 /3 hours Time To Alarm 10 s HAL 25 m VAL Not applicable Continuity risk 3,10 –4 /15 minutes SoL Service availability 0,998 Service Area National Waters ( 9 ) of EU-MS + Norway and Switzerland Guarantee of service Yes Accessibility Through SBAS-compatible receivers ( 1 ) User access for open service and safety of life services limited to visibility area of the geostationary satellites. ( 2 ) Absence of limitation to allow the design of EGNOS v3 to include additional stations in order to extend, in a continuous manner, the EGNOS service area in accordance with Article 2(5) of Regulation (EU) No 1285/2013. ( 3 ) Latency is the time elapsed since the transmission of the last bit of the navigation message from the space segment (EGNOS and GPS/Galileo satellites) until the data leave the EGNOS server. ( 4 ) The performance specifications included in this table address only signal-in-space contributions. ( 5 ) A range is given for service availability for approach procedure. The bottom of the range shall correspond to the availability expected for the GPS L1-only service. The top of the range shall be available for users equipped with a dual frequency GPS L1-L5 receiver or a combined GPS/Galileo dual-frequency receiver. ( 6 ) ‘Land masses of an area’ means any land territory, including islands, in the FIR of that area except for the Cat I service for which coverage of Azores, Madeira and Canary Islands are excluded. ( 7 ) Until sufficient Galileo performance is demonstrated, APV-I service level is accepted. ( 8 ) The performance specifications included in this table address only signal-in-space contributions. ( 9 ) National (or territorial) waters are defined in the 1982 United Nations Convention on the Law of the Sea as waters extending at most 12 nautical miles from the coast line.
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