Civil Aviation Authority
- Norway -
P.O. Box 243
Controlled Airspace in the Ekofisk and Balder offshore areas based on ADS-B
This AIC replaces AIC-I 03/13 (05 Oct 2013)
Map of the area (right) for guidance only - click map for larger version.
The purpose of this AIC is to inform operators about the on-going work to establish Controlled Airspace in the ADS area south of Statfjord CTA based on ADS-B (Automatic Dependent Surveillance - Broadcast) surveillance technology. This AIC provides guidance to helicopter operators concerning requirements for equipment.
The affected areas are Ekofisk ADS area and Balder ADS area with planned implementation date for Ekofisk from 19 November 2015 and Balder from 03 March 2016.
To improve safety, Avinor Flysikring AS (hereby Avinor) has decided to establish Controlled Airspace in parts of the North Sea as a follow up on a recommendation from NOU 2002:17 (Helikoptersikkerheten på norsk kontinentalsokkel). Air Traffic Services will be based on new surveillance technology and the commission implementing regulation (EU) Regulation No 1207/2011 (requirements for the performance and the interoperability of surveillance for the single European sky) amended by commission implementing regulation (EU) No 1028/2014 as implemented by regulation Samvirkingsevnen i Det europeiske nett for lufttrafikkstyring (BSL G 1-2) av 14. mai 2007 nr. 513. (Hereby (EU) No 1207/2011).
Avinor performed a feasibility study in 2009 and the study concluded that ADS-B is a safe and cost-effective solution for supporting the implementation of Controlled Airspace in these areas.
ADS-B is a function on-board an aircraft that periodically transmits parameters like identification, position, velocity and other information through 1090MHz Extended Squitter messages. The aircraft position is determined by the use of GNSS (Global Navigation Satellite System).
The broadcasted ADS-B messages are received by a network of ADS-B Ground Stations, processed and sent to the Avinor ATM system to be presented on controllers Situation Data Display (SDD).
The Avinor Ekofisk and Balder ADS-B implementation project expects all operators that hold a license or permit to carry out commercial aviation by helicopter to installations within the lateral limits of the Ekofisk and Balder CTA and between such installations to be equipped according to EUROCAE ED-102A or its US equivalent RTCA DO-260B. The helicopters shall at the latest be equipped and certified when the Ekofisk and Balder CTA is established.
EU No 1207/2011 shall apply to all flights operating as general air traffic in accordance with instrument flight rules within the airspace provided for in Article 1(3) of Regulation (EC) No 551/2004 of the European Parliament and of the Council. EU No 1207/2011 mandates the installation and use of Mode S and ADS-B avionics for aircraft operating flights with an individual certificate of airworthiness first issued on or after 8 June 2016 (new aircrafts) and aircraft operating flights with an individual certificate of airworthiness first issued before 8 June 2016 (retrofit) at the latest 7 June 2020.
Until the required date of compliance concerning respectively new and retrofit aircraft in EU Regulation 1207/2011 aircrafts are allowed to use equipment according to RTCA DO-260A. Permission to use equipment according to DO-260A requires that the transponder submits a valid Mode A code according to the active flight plan as part of 1090MHz Extended Squitter.
4. Change of BSL D 2-10
Upgrading of the regulation will set firm requirements to holders of a license or permit to carry out commercial aviation by helicopter to installations within the Norwegian continental shelf and operation between such installations to expedite the implementation of ADS-B transponder. There is an ongoing consultation process regarding BSL D 2-10 which ends in December 2015 that propose ADS-B transponder requirements from January 2016.
Helicopter operators performing flights in areas on the Norwegian continental shelf without ADS-B coverage shall employ another suitable system for continuous tracking of their flights.
CAA- N will continue their practice to grant exemptions from the requirements for a shorter period. Applications for such exemption shall contain information about the aircraft's registration mark, the time period for flight and which airspace flight is scheduled in.
Air Traffic Control will also at the request from helicopter operator or flight commander be able to allow individual flights performed even if requirements for ADS-B transponder that either satisfies standard ED-102A, DO260B or equivalent aren’t met. If such permission is granted flight must be conducted in accordance with the conditions set by ATC.
5.Flight Information & Alerting Services
Currently ADS-B is used in combination with radar for Flight Information and Alerting Services in the Ekofisk and Balder ADS areas.
ADS-B will be used for Flight Information and Alerting Services at Ekofisk and Balder ADS area (Class G airspace below the CTAs).
CAA-N may grant exemptions from the requirement in BSL D 2-10 for a limited period of time. The application for exemption must include aircraft ID, timeframe and airspace for the planned flight.
5. Controlled airspace
The controlled airspace (CTA) will have the same horizontal coordinates as today's ADS areas while vertically it will extend from 1500 FT to FL 085. The ADS area below 1500 FT will continue as uncontrolled class G airspace.
Air Traffic Services will be provided by Avinor Flysikring AS at Norway Area Control Center, Sector Group West in Stavanger. The ADS-B implementation and ATS will be based on the EUROCAE ED-126 ADS-B in Non-Radar Area (NRA) framework.
Avinor’s goal is to open the Ekofisk CTA by 19 November 2015 and Balder CTA by 03 March 2016.
CAA-N will mandate carriage of ED-102A/DO-260B or DO-260A ADS-B transponders certified in accordance with AMC 20-24 or CS-ACNS to holders of a license or permit to carry out commercial aviation by helicopter to installations within the Norwegian continental shelf and operation between such installations.
6. Further information
Enquiries relating to this AIC should be addressed to:
Civil Aviation Authority - Norway
P.O. Box 243
+47 75 58 50 00
+47 75 58 50 05 (telefax)
Avinor Flysikring AS
Project Manager, Leif Arne Fjeldvik
+47 907 86 322