1.1 The purpose of this publication is to provide information about Finland's PBN (Performance Based Navigation) based operating environment in accordance with ICAO's PBN concept and its operation in the event of interferences. The information has been refined due to changes in the operating environment due to the increase of GNSS interferences.
 

1.2 PBN based operating environment of Finland has been described in AIP section GEN 1.5, subsections 3.1 and 3.2, which is refined by this AIC.
 

1.3 European Union's Aviation Safety Agency EASA has issued instructions to stakeholders by the SIB (Safety Information Bulletin) publication (https://www.easa.europa.eu/GNSS) concerning increase of GNSS interferences.
 

2.1 Commission Implementing Regulation (EU) 2018/1048 laying down airspace usage requirements and operating procedures concerning performance-based navigation, requires the gradual transition to exclusively use the specified performance-based navigation procedures.
 

2.2 National airspace policy (Traficom), updated version 20.1.2021.
 

2.3 Finnish Transport and Communications Agency Traficom has published the updated strategy of navigation and surveillance systems in Finland for 2020-2030. In accordance with the strategy conventional navigation equipment will gradually be withdrawn as a primary navigation means by 2030.
 

2.4 Finnish Transport and Communications Agency Traficom has, as of 25 May 2023, approved the updated PBN transition plan version 2 of Finland in accordance with Implementing Regulation (EU) 2018/1048.
 

3.1 The following airports in Finland have the PBN operating environment:
 

EFET, Enontekiö
EFHA, Halli
EFIV, Ivalo
EFJO, Joensuu
EFKI, Kajaani
EFKE, Kemi-Tornio
EFKK, Kokkola-Pietarsaari
EFKS, Kuusamo
EFLP, Lappeenranta
EFSA, Savonlinna
EFTU, Turku
EFUT, Utti
EFVA, Vaasa
 

4.1 Prior to March 2022, GPS interference events in aviation in Finland were rare. After that, the number of interferences has increased and regionally events may occur daily.
 

The situational picture of the overall situation of the satellite navigation service interference in Finland is published by Finnish Transport and Communications Agency Traficom, in the following address:
 

https://tieto.traficom.fi/fi/tilastot/satelliittinavigointipalveluiden-hairiot-suomessa
https://tieto.traficom.fi/en/statistics/satellite-navigation-service-interference-finland
 

4.2 At airports, where more than one ILS approach procedure has been published for a runway, procedures have been identified according to the principles of ICAO concerning the naming of flight procedures. According to it:
 

- Primary procedure, existing for undisturbed PBN based operating environment is published as ILS Z
- Contingency procedure for interference events in PBN based operating environment is published as ILS Y
 

4.3 Accessibility of airports with various contingency procedures is listed below.
 

4.3.1 Conventional initial approach is available:
 

EFJY, Jyväskylä: VOR/DME
EFKT, Kittilä: NDB
EFKU, Kuopio: VOR/DME
EFMA, Mariehamn: VOR/DME
EFMI, Mikkeli: NDB
EFOU, Oulu: VOR/DME
EFPO, Pori: VOR/DME
EFRO, Rovaniemi: VOR/DME
EFTP, Tampere-Pirkkala: VOR/DME
EFSI, Seinäjoki: NDB
 

4.3.2 Joining the ILS approach is available through surveillance service procedures (radar service):
 

EFHA, Halli *
EFHK, Helsinki-Vantaa
EFIV, Ivalo *
EFJO, Joensuu, surveillance service planned from 17 APR 2025 
EFJY, Jyväskylä
EFKE, Kemi-Tornio, surveillance service planned from 23 JAN 2025 *
EFKK, Kokkola-Pietarsaari, surveillance service planned from 17 APR 2025 
EFKS, Kuusamo, surveillance service planned from 28 NOV 2024, but not during AFIS service *
EFKT, Kittilä
EFKU, Kuopio
EFMA, Mariehamn
EFOU, Oulu
EFPO, Pori
EFRO, Rovaniemi
EFTP, Tampere-Pirkkala
EFTU, Turku *
EFVA, Vaasa *
 

* There is a published GNSS requirement for the ILS approach procedure, because the initial approach and missed approach of the published procedure are based on RNP APCH navigation specification.
 

4.3.3 Initial approach or STAR based on DME/DME navigation is available:
 

EFHK, Helsinki-Vantaa
EFJO, Joensuu
EFSA, Savonlinna
 

4.3.4 Accessibility requires the use of GNSS system:
 

EFET, Enontekiö
EFKE, Kemi-Tornio *
EFKI, Kajaani
EFKK, Kokkola-Pietarsaari *
EFKS, Kuusamo *, but always during the AFIS service 
EFLP, Lappeenranta
EFUT, Utti
 

* until the surveillance service is introduced (see 4.3.2).