Balloons

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.

Balloons have the right of way over other traffic. Under the forthcoming mandate, balloons will need to be equipped with a Mode S transponder. If the 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.

Technology recommendation:

1. Transponder with ADS-B Out

Recommended to be electronically visible to other traffic, especially when operating below VMC or at night. It ensures interoperability with traffic warning systems in motor‑powered aircraft.

2. ADS-L

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.

Among balloons, there is a high risk of a lower balloon climbing into another one directly above, with the view obstructed by the balloon’s envelope. Therefore an “in” function can be very desirable from a safety perspective, especially for ballooning events with take-offs in short sequence and longer flights of multiple balloons in proximity. Furthermore, balloon pilots regularly operating close to or within CTRs or TMAs may want to benefit from improved situational awareness.