Gliders

Disclaimer

The technology recommendation, while targeting the integration into the overall ecosystem, includes solutions meeting the requirements of the forthcoming mandate, as currently foreseen. These solutions can benefit from financial support under the Special Financing scheme (BV87b) as long as the mandate is not adopted. Aircraft owners and pilots who wish to benefit from this funding are encouraged to submit an application by November 30, 2026, at the latest. Please be aware that the mandate remains subject to change until its adoption.

Under the forthcoming mandate, gliders will need to be equipped with a Mode S transponder. If this transponder already supports ADS-B Out, no further action is expected to be needed; otherwise, it will need to be upgraded to ADS-B Out, or an ADS-L device installed. The FOCA recommends upgrading existing Mode S transponders to ADS-B Out.

Technology recommendation:

1. ADS-L or Transponder with ADS-B Out

ADS-B Out is recommended due to the inherent benefits of a permanent installation (e.g. known reliability, range, diversity). It ensures interoperability with traffic warning systems in motor‑powered aircraft. ADS-L Out is a cost-effective alternative to be compliant with the forthcoming mandate while ADS-L In/Out is recommended for integration into the overall ecosystem. Until the users equipped with ADS-L In devices represent a large majority, it is recommended to keep existing solutions and upgrade them to ADS-L.

For example, existing FLARM installations can be upgraded to transmit ADS-L Out and there are ADS-L In/Out devices, which act as a “FLARM extender” to supplement an existing FLARM and which are connected to external antennas.