- Date
- July 23, 2025, 08:40 local (08:40 UTC)
- Place
- Siviez, Switzerland
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- HB-ZAOKaman K-Max
- Defining event
- Enroute: Loss of control in flight
- Investigation class
- Class 5 - No publish
- NTSB office
- General Aviation Accidents
- Lead agency
- Other
- Case key
- 200644
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Loss of control in flightAll aircraft: 5,002 casesDefining event
Aircraft
- Registration
- HB-ZAO
- Reported as
- Kaman K-Max
- Category
- Helicopter
- Damage
- Substantial damage
- Flight
- Non-U.S., commercial