The cooperative surveillance system is the key enabler of modern surveillance infrastructure. The efficient operation of such systems is depending on a perfect interoperability between interrogators and airborne equipment known as transponder. Techniques such as Mode S and automatic dependent surveillance – broadcat (ADS-B) allow access to an increasing number of information from aircraft including Aircraft Identification, selected altitude, and position measured on board the aircraft. To support such exchanges specific and sometimes complex protocols and installation are necessary to collect information and to pass this information to the remote interrogator.

Failures of equipment, installation issues, incompatibility of versions as well as design errors in equipment may result in issues ranging from corrupted aircraft information to loss of aircraft on the controller display.

The objective of the Surveillance avionics performance analysis service is to identify avionics issues and failures before they become critical for the operation, to determine the origin and resolve faults in aircraft avionics with operators, manufacturers, standardization bodies and regulatory authorities.


  • Support to aircraft operators on surveillance equipment requirements
  • Analysis of ground and anti-collision (TCAS) surveillance issues reported by ANSPs/aircraft operators
  • Determination of sources of surveillance problems
  • Contact aircraft operators to resolve avionics issues as specified in EU 1207/2011
  • Resolve issues with avionics and aircraft manufactures or standardization bodies
  • Support regulatory bodies on airborne surveillance equipment


Access conditions

The service is available to ANSPs, Aircraft operators and regulatory authorities or any other persons detecting technical problem with surveillance equipment on aircraft. For more information, please contact us.