ASN Wikibase Occurrence # 161707
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| Date: | Saturday 26 October 2013 |
| Time: | 13:00 |
| Type: |  Bell OH-58A Kiowa |
| Owner/operator: | Missouri State Highway Patrol |
| Registration: | N283MP |
| MSN: | 40232 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 5683 hours |
| Engine model: | Rolls-Royce T63-A-720 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 1 mile SE of the Jefferson City Memorial Airport (KJEF), MO -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Jefferson City, MO (JEF) |
| Jefferson City, MO (JEF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N283MP
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 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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