ASN logo
ASN Wikibase Occurrence # 245769
Last updated: 25 September 2021
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Time:10:24 LT
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different
Aerospatiale AS 350B3 Ecureuil
Owner/operator:Swift Copters
Registration: HB-ZGV
MSN: 3426
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Minor
Location:Montreux -   Switzerland
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:LSGS
Destination airport:LSGS
Investigating agency: STSB Switzerland
During a flight to inspect high-voltage power cables, the helicopter collided with a fibre-optic cable and cut through it. The helicopter landed on a nearby field without causing any other damage.

The accident of the helicopter, which was flying for visual inspection along an overhead line, was caused by a collision with a fibre optic cable. The following causal factors were identified :
- the fibre-optic cable was almost impossible to distinguish;
- the fibre-optic cable was not recorded on the air navigation obstacle chart because it had not been reported to the competent authorities.


Accident investigation:
Investigating agency: STSB Switzerland
Status: Investigation completed
Duration: 4 years and 4 months
Download report: Final report


Photo of HB-ZGV courtesy

Payerne (LSMP)
5 September 2014; (c) Erik Frikke

Revision history:

16-Dec-2020 20:22 harro Added
16-Dec-2020 20:24 harro Updated [Time]

Corrections or additions? ... Edit this accident description