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ASN Wikibase Occurrence # 161707
Last updated: 16 August 2021
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell OH-58A Kiowa
Owner/operator:Missouri State Highway Patrol
Registration: N283MP
MSN: 68-16918
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:1 mile SE of the Jefferson City Memorial Airport (KJEF), MO -   United States of America
Phase: En route
Departure airport:Jefferson City, MO (JEF)
Destination airport:Jefferson City, MO (JEF)
Investigating agency: NTSB
The pilot receiving instruction reported that the purpose of the flight was to remain in the airport traffic pattern while practicing autorotation landings. He stated that, after about 45 minutes of flight training, the engine began to fluctuate between full and half power while the helicopter was climbing on a downwind leg. The helicopter also experienced an uncommanded yaw with each engine power fluctuation. The flight instructor took control of the helicopter and entered a straight-in autorotation toward a nearby field. The helicopter touched down with a slight forward ground run, during which the left skid dug into the soft soil, which caused the helicopter to rotate 180 degrees before it stopped. The main rotor blades severed the tail boom from the fuselage during the forced landing.
A postaccident examination revealed no airframe anomalies that would have prevented normal operation of the helicopter. During a test run, the accident engine demonstrated normal operation at all power settings and was capable of producing maximum takeoff horsepower. Uncontaminated fuel was found onboard the helicopter. The reason for the reported loss of engine power could not be determined.

Probable Cause: The loss of engine power for reasons that could not be determined because postaccident examinations of the engine did not reveal any anomalies that would have precluded normal operation.


FAA register:

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Download report: Final report

Revision history:

27-Oct-2013 16:57 gerard57 Added
27-Oct-2013 19:14 Geno Updated [Aircraft type, Location, Nature, Source]
28-Oct-2013 16:49 Geno Updated [Time, Aircraft type, Registration, Cn, Location, Source]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
29-Nov-2017 09:19 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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