ASN Wikibase Occurrence # 290107
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| Date: | Friday 12 April 2013 |
| Time: | 15:45 LT |
| Type: |  Bell OH-58C |
| Owner/operator: | Maricopa Co Sheriffs Department |
| Registration: | N119FT |
| MSN: | 40329 |
| Total airframe hrs: | 9129 hours |
| Engine model: | Rolls Royce 250-C20C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Phoenix, AZ -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Phoenix-Deer Valley Airport, AZ (DVT/KDVT) |
| Phoenix-Deer Valley Airport, AZ (DVT/KDVT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After performing several autorotations in the helicopter during a checkflight, the flight instructor told the pilot to complete the last practice autorotation of the day, which was intended to be a power recovery autorotation. The pilot initiated the maneuver when the helicopter was about 500 feet above ground level (agl) by lowering the collective and rolling the throttle to idle power. As the helicopter descended below 60 feet agl, the flight instructor told the pilot to increase the engine power. The pilot had a delayed response to roll the throttle back to a full power setting. As a result, the low-rotor horn began to sound. The pilot did not believe sufficient time existed for a power recovery; therefore, he decided to perform a full touchdown. The helicopter subsequently touched down hard in soft dirt, and the nose pitched down, resulting in the main rotor blades severing the tailboom. The pilot reported no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
Probable Cause: The pilot receiving instruction's delay in adding power during a recovery from a practice autorotation.
Accident investigation:
 |
|
Sources:
NTSB WPR13TA198
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 06-Oct-2022 10:57 | ASN Update Bot | Added |
| 30-May-2023 07:23 | Ron Averes | Updated |
Corrections or additions? ... Edit this accident description
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