Accident to the Kubicek BB26 registered F-HBBQ on 26/09/2021 at Chambley
Décollage en vol captif, en instruction solo, chute de l'instructeur suspendu à la sangle d'amarrage
The day of the occurrence, the weather conditions permitted a tethered flight. After the first student pilot had carried out an ascent and descent, the instructor decided to change pilots on the ground. The balloon landed and the first student pilot got out of the basket. At this moment, the second student pilot, who had the controls, heated the envelope.
The combination of the reduction in weight and the heating of the envelope caused the hot-air balloon to quickly climb. The instructor had a reflex action and grabbed the guide rope connecting the vehicle to the balloon to act as a counterweight and to try to slow down the balloon’s ascent speed. He then let go.