Accident Eurocopter AS 350B3 Ecureuil HB-ZMO,
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ASN Wikibase Occurrence # 157380
 
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Date:Monday 1 July 2013
Time:09:45
Type:Silhouette image of generic AS50 model; specific model in this crash may look slightly different    
Eurocopter AS 350B3 Ecureuil
Owner/operator:Swiss Helicopter
Registration: HB-ZMO
MSN: 7281
Year of manufacture:2011
Fatalities:Fatalities: 4 / Occupants: 4
Aircraft damage: Destroyed
Category:Accident
Location:near Kröntenhütte, UR -   Switzerland
Phase: Approach
Nature:Passenger
Departure airport:Leutschachhütte
Destination airport:Kröntenhütte
Investigating agency: SUST
Confidence Rating: Accident investigation report completed and information captured
Narrative:
Crashed while on approach to the Kröntenhütte in a mountainous area.

Causes
The accident is attributable, with a high likelihood, to a loss of control by the pilot after the onset of servo transparency during a right turn in close proximity to the terrain, and the subsequent collision of the helicopter with the ground.
The risky flight tactic of the pilot contributed to the development of the accident

Accident investigation:
cover
  
Investigating agency: SUST
Report number: 
Status: Investigation completed
Duration: 3 years and 5 months
Download report: Final report

Sources:

http://www.20min.ch/schweiz/zentralschweiz/story/Heli-Absturz-bei-bestem-Flugwetter---vier-Tote-21928482

http://www.sust.admin.ch/pdfs/AV-berichte/2265_D.pdf

Revision history:

Date/timeContributorUpdates
01-Jul-2013 07:28 harro Added
14-Dec-2016 07:39 geni Updated [Phase, Nature, Source]
17-May-2022 18:28 harro Updated [Departure airport, Destination airport, Narrative, Accident report]

Corrections or additions? ... Edit this accident description

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