Regulatory Status

Europe
In December 2011, the European Commission published Implementing Rule 1332/2011, which established the following requirements:

  • Forward-Fit: All aircraft with an individual certificate of airworthiness issued as of 1 March 2012 and having a Maximum Takeoff Mass (MTOM) greater than 5,700 kg (12,500 lb) or a maximum passenger seating capacity of more than 19 are required to be equipped with ACAS II Version 7.1 (TCAS II Version 7.1) in order to operate in European airspace.
  • Retrofit: All aircraft with an individual certificate of airworthiness issued prior to 1 March 2012 and having a MTOM greater than 5,700 kg (12,500 lb) or a maximum passenger seating capacity of more than 19 are required to be equipped with ACAS II Version 7.1 (TCAS II Version 7.1) as of 1 December 2015 in order to operate in European airspace.

Note: Operators who have voluntarily equipped their aircraft with a TCAS II system (i.e., even if not required by operating rule) are also required to have Version 7.1 software by the applicable deadlines in order to operate in European airspace.

United States

  • There is currently no published deadline for upgrading TCAS II systems with Version 7.1 software for operation in the United States. Operation in RVSM airspace currently requires TCAS II-equipped aircraft to have Version 7.0 software or later.

Other Regions

  • ICAO Annex 10 standards specify that TCAS II systems should have Version 7.1 software on new aircraft as of 1 January 2014 (forward-fit) and on existing aircraft as of 1 January 2017 (retrofit).
  • Business aircraft operators who fly internationally need to be aware of the current status of any requirements for TCAS II Version 7.1 in the regions they intend to operate.