This technology recommendation is part of the FASST-CH initiative, which aims at reducing the probability of mid-air-collisions by making all traffic in the air electronically visible.
The recommendation builds on the thousands of devices that are already in use by the general aviation community. Therefore, a wide range of equipment is included. It is important to remark that our recommendations advise aircraft owners and pilots on the best suited technologies for their aircraft category, considering the technologies supporting the future FASST-CH i-conspicuity ecosystem in Switzerland. These recommendations should not be understood as a mandate nor are legally binding.
Air-to-air interoperability will be achieved through migrating to a minimum set of open standards with software updates on existing equipment or with new equipment. Re‑broadcasting of data via a ground network will further support the interoperability of existing installations.
The proposed open standards are ADS-B out on 1090 MHz and ADS-L in the SRD 860 MHz frequency band. While the former is almost exclusively used in certified installations, the latter can be used in installed or portable devices.
