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| Date: | Wednesday 28 May 2025 |
| Time: | 02:50 |
| Type: | High-altitude balloon |
| Owner/operator: | Zephalto |
| Registration: | |
| MSN: | |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Location: | Mont-de-Marsan, Landes -
 France
|
| Phase: | Standing |
| Nature: | Test |
| Departure airport: | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
At a racetrack in Mont-de-Marsan, the Zephalto company was conducting a test flight of a hydrogen-filled stratospheric balloon equipped with a capsule for a crew.
Takeoff was scheduled for 04:00 But at 02:50 a gust of wind caught the balloon and caused it to take off.
An employee fell from a height of 15 meters and was seriously injured, suffering several open fractures, particularly on his legs.
Sources:
https://www.francebleu.fr/infos/faits-divers-justice/un-probleme-au-decollage-d-un-ballon-stratospherique-a-mont-de-marsan-un-homme-chute-de-15-metres-3313690
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-May-2025 07:15 | Frédéric Goudon | Added |
| 29-May-2025 07:17 | ASN | Updated [Total fatalities, Narrative, ] |
| 29-May-2025 17:20 | Aerossurance | Updated [Time, Location, Narrative, ] |
Corrections or additions? ... Edit this accident description
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