ASN Wikibase Occurrence # 359527
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| Date: | Monday 28 November 1994 |
| Time: | 16:40 LT |
| Type: |  Hiller UH-12C |
| Owner/operator: | Private |
| Registration: | N54594 |
| MSN: | 873 |
| Total airframe hrs: | 2939 hours |
| Engine model: | FRANKLIN 6V-335-B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Twisp, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | (2S0) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHEN THE STUDENT PILOT APPLIED POWER DURING THE LANDING FLARE OF A PRACTICE AUTO ROTATION THE ENGINE DID NOT RESPOND. HE THEN TRANSITIONED TO A FULL AUTOROTATION BUT WAS LATE APPLYING COLLECTIVE TO FLARE BEFORE TOUCHDOWN AND A MAIN ROTOR BLADE IMPACTED THE TAILBOOM. NO MECHANICAL MALFUNCTION OF THE HELICOPTER'S POWERPLANT WAS DISCOVERED.
Probable Cause: AN UNEXPLAINED LOSS OF POWER AND THE STUDENT PILOT'S DELAYED APPLICATION OF COLLECTIVE DURING THE LANDING FLARE.
Accident investigation:
 |
|
Sources:
NTSB SEA95LA022
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 11:53 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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