Accident to the Airbus AS350 registered HB-ZES on 14/02/2024 at Sierre [Investigation delegated to BEA by the authorities of Switzerland]

Collision with a high-voltage power line during a slinging operation

Responsible entity

France - BEA

Investigation progression Closed

Progress: 100%

The final report has been published (April 2025). A courtesy translation into English will be available soon.

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General information
Local date	14/02/2024
Responsible entity	France - BEA
State or area of occurrence	Switzerland
Location	Sierre
Human consequences	Serious
Number of serious injuries	1
Aircraft consequences	Destroyed
Occurrence class	Accident
Occurence category	LALT: Low altitude operations
File number	BEA2024-0046

Flight Information
Aircraft category	Helicopter - Small helicopter
Operator	Switzerland - Swift Copters Sa (Eagle Valais)
Manufacturer / Model	AEROSPATIALE - AS350
Aircraft Registration	HB-ZES
State of registry	Switzerland
Last departure point	Switzerland (Niouc (VS))
Planned destination	Switzerland (Niouc (VS))
Flight phase	Manoeuvring
Serial number	3657
Operator Type AG	Sales/rental/service
Operation Type	Specialised Operations (Aerial Work) - Construction/Sling load

BEA is the French air safety investigation authority for civil aviation. The sole objective of the investigation is to improve air safety. It is intended neither to apportion blame nor to assess responsiblity.