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| Date: | Wednesday 11 February 2015 |
| Time: | 08:11 |
| Type: |  Eurocopter AS 350B3 Ecureuil |
| Owner/operator: | Swiss Helicopter |
| Registration: | HB-ZIG |
| MSN: | 4358 |
| Year of manufacture: | 2007 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Other fatalities: | 0 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Grubenbachfassung, Gde Guttannen, BE -
 Switzerland
|
| Phase: | Landing |
| Nature: | Passenger - Non-Scheduled/charter/Air Taxi |
| Departure airport: | KWO Zentrale Handegg, Gde Guttannen |
| Grubenbachfassung, Gde Guttannen | |
| Investigating agency: | STSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The main rotor blades contacted an obstacle during landing on a roof causing the helicopter to roll over.
The helicopter was engaged in transporting workers from the energy company Kraftwerke Oberhasli from one site to another.
Causes:
The accident is due to a contact of the main rotor with an obstacle, because a landing was intended in a place with too narrow space conditions.
The following factors have contributed to the accident:
- Both crew members flew to this site for the first time;
- The absence of relevant information on the site;
- The information that the workers got out on the roof on former flights.
Accident investigation:
 |
|
Sources:
https://www2.sust.admin.ch/pdfs/AV-berichte/2281.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Feb-2015 19:10 | harro | Added |
| 17-Feb-2015 20:05 | Aerossurance | Updated [Total occupants, Source, Narrative, ] |
| 26-Jul-2015 10:01 | Anon. | Updated [Damage, ] |
| 15-May-2017 16:37 | harro | Updated [Nature, Source, Narrative, ] |
| 17-May-2022 18:43 | harro | Updated |
Corrections or additions? ... Edit this accident description
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