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ASN Wikibase Occurrence # 122819
Last updated: 26 August 2021
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Date:27-MAY-2011
Time:18:00
Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell OH-58A-BF Kiowa
Owner/operator:Bay County Sheriffs Office
Registration: N82772
MSN: 68-16729
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Old Panama City Airport - KPFN, FL -   United States of America
Phase: Take off
Nature:Unknown
Departure airport:Panama City, FL (PFN)
Destination airport:Panama City, FL (PFN)
Investigating agency: NTSB
Narrative:
The pilot was hover taxiing the helicopter straight out of an old, temporary hangar, as he had done numerous times. He estimated that the helicopter was about 3 feet above the ground, the last few feet of the tail were still inside the hangar, and he heard a loud bang. He started to lower the collective, but could not control the helicopter, which tipped over on its left side as it impacted the ground. Photographs showed that the main rotor blades had separated from the mast. The vertical tail fin had scrape marks on its top and the upper leading edge had an almost horizontal line several inches below the top. The tail rotor blades, which did not extend above the top of the vertical fin, were pristine. The hangar door overhead frame had three sets of scrape marks, with one angled about 30 degrees to the right and two sets angled about 20 to 25 degrees to the left. Electrical conduit would have normally been secured above the hangar door frame, but was drooped below it, separated and coiled. Remnants of the conduit, and the fact that the main rotor blade tips would have rotated above the vertical tail fin, indicate that the conduit likely had drooped below the hangar frame after the main rotor passage, then snagged the top of the vertical fin. The multiple sets of scrape marks at different angles on the underside of the overhead hangar frame indicate that the helicopter then likely pivoted several times while snagged, as the pilot lost control. No preexisting mechanical malfunctions were noted with the helicopter.
Probable Cause: The drooping electrical conduit, which snagged the vertical fin and resulted in the pilot's inability to control the helicopter. Contributing to the accident was the operator's decision to have the pilot fly the helicopter out of the hangar.

Sources:

NTSB

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 8 months
Download report: Final report
Location


Revision history:

Date/timeContributorUpdates
29-May-2011 03:34 gerard57 Added
29-May-2011 05:04 RobertMB Updated [Time, Aircraft type, Location, Departure airport, Source]
30-May-2011 04:06 RobertMB Updated [Operator]
31-May-2011 17:40 RobertMB Updated [Aircraft type, Registration, Cn]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 16:54 ASN Update Bot Updated [Cn, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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