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) |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative: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:
|
| |
Investigating agency: | NTSB |
Report number: | SEA95LA022 |
Status: | Investigation completed |
Duration: | 7 months |
Download report: | Final report |
|
Sources:
NTSB SEA95LA022
Location
Revision history:
Date/time | Contributor | Updates |
15-Mar-2024 11:53 |
ASN Update Bot |
Added |
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