Bristow Group, which provides helicopter transport services for offshore oil and gas and government operations, is retrofitting a fleet of 44 helicopters, including Sikorsky S-76 C++ and Sikorsky S-92A, with Rockwell Collins' TCAS II system. The system is certified for industry-standard 'unknown vibration levels', meaning it can be installed on any helicopter platform.

Rockwell Collins has already seen its TTR-4000 TCAS II system fitted on 24 Bristow helicopters, and within the next year the TTR-4100, which adds traffic computer capability and enables Automatic Dependent Surveillance-Broadcast (ADS-B), will be installed in a further 20.