Accident MBB/Kawasaki BK 117B-2 N330SL,
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ASN Wikibase Occurrence # 288759
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Date:Sunday 13 November 2011
Time:04:05 LT
Type:Silhouette image of generic BK17 model; specific model in this crash may look slightly different    
MBB/Kawasaki BK 117B-2
Owner/operator:Air Methods Corp
Registration: N330SL
MSN: 7216
Year of manufacture:1990
Total airframe hrs:12990 hours
Engine model:Lycoming LTS-101-750
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Carbondale, Illinois -   United States of America
Phase: Standing
Departure airport:Sparta, IL
Destination airport:Carbondale, IL (5IS1)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
During an engine shutdown procedure following an emergency medical services flight, a main rotor blade sustained substantial damage when it contacted the left vertical stabilizer. The main rotor blade was broken near its root, and the tailboom and tail rotor driveshaft cover were dented. The local recorded wind was 25 knots gusting to 34 knots. The damage was consistent with the main rotor blade flapping with the gusty wind conditions and impacting the stabilizer. The operator reported that there were no preaccident mechanical malfunctions with the helicopter.

Probable Cause: The main rotor blade's contact with the vertical stabilizer during the engine shutdown in strong, gusty wind conditions.

Accident investigation:
Investigating agency: NTSB
Report number: CEN12CA078
Status: Investigation completed
Duration: 3 months
Download report: Final report




Revision history:

05-Oct-2022 04:31 ASN Update Bot Added

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