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ASN Wikibase Occurrence # 237618
Last updated: 15 September 2021
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Type:Silhouette image of generic BK17 model; specific model in this crash may look slightly different
MBB BK 117C-2
Owner/operator:Mayo Clinic
Registration: N145EC
MSN: 9181
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Location:Strum, WI -   United States of America
Phase: Landing
Departure airport:Eau Claire, WI (EAU)
Destination airport:Strum, WI
Investigating agency: NTSB
The pilot and two crewmembers were on a night air medical flight. While on approach to the landing zone with several obstructions nearby, the pilot noticed a street sign and slowed the helicopter, which lowered the tailboom and tail rotor. The helicopter's tail rotor then struck a hose rack on a fire truck, which resulted in a loss of control and impact with the ground. The helicopter sustained substantial damage to the tail rotor. The pilot reported no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Probable Cause: The pilot's failure to maintain clearance from the fire truck.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 6 months
Download report: Final report

Revision history:

03-Jul-2020 12:37 ASN Update Bot Added
22-Jul-2020 06:43 Anon. Updated [Aircraft type, Narrative]
22-Jul-2020 06:43 harro Updated [Aircraft type, Nature, Narrative, Accident report, ]

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