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ASN Wikibase Occurrence # 240466
Last updated: 25 August 2020
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Time:06:00 UTC
Type:Eurocopter EC-175B
Registration: OY-HHV
C/n / msn: 5006
Fatalities:Fatalities: 0 / Occupants: 18
Other fatalities:0
Aircraft damage: Minor
Category:Serious incident
Location:Esbjerg (EKEB) -   Denmark
Phase: Standing
Departure airport:Esbjerg Airport (EBJ/EKEB)
Destination airport:Tyra E (Helideck) (EKTE)
Investigating agency: HCLJ Denmark
Following a maintenance inspection, the inspections and tool control performed by the maintenance shift was not according to procedures and failed to identify a breaker bar with an attached socket on the main rotor (MR) head of the helicopter.
During the start-up sequence of engine no. 2, the breaker bar and the socket ejected from the MR head, and the breaker bar penetrated the leading edge of a moving rotor blade, while the socket ended up on the apron.
Consequential human factor effects partly caused by an ongoing discussion with the management regarding future work shifts, organisational structure and maintenance procedures perceived by engineers as being less than optimum might have influenced the decision-making and the effectiveness of the applied procedures of the shift.


AIB Denmark

Accident investigation:
Investigating agency: HCLJ Denmark
Status: Investigation completed
Download report: Final report


Photo: AIB Denmark

Revision history:

25-Aug-2020 18:44 harro Added
25-Aug-2020 18:52 harro Updated [Photo, Accident report, ]

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