ASN Wikibase Occurrence # 363682
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| Date: | Wednesday 6 May 1992 |
| Time: | 08:35 LT |
| Type: |  Hiller UH-12E |
| Owner/operator: | Warren Jackson |
| Registration: | N8286 |
| MSN: | 1543 |
| Total airframe hrs: | 4278 hours |
| Engine model: | LYCOMING VO-540 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Milford, IA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT OF THE ACCIDENT HELICOPTER REPORTED A COMPLETE LOSS OF ENGINE POWER WHILE PERFORMING AERIAL APPLICATION OF AGRICULTURAL CHEMICALS. THE FAILURE OCCURRED AS HE WAS TURNING TO REVERSE DIRECTION BETWEEN SWATH RUNS. THE PILOT STATED HE RETURNED TO LEVEL FLIGHT AND ENTERED AUTOROTATION. HE STATED HIS MAIN ROTOR RPM WAS LOW WHEN HE APPLIED COLLECTIVE PITCH TO CUSHION THE AUTOROTATIVE LANDING AND THE HELICOPTER LANDED HARD. DURING TOUCHDOWN THE SKID LANDING GEAR COLLAPSED AND THE HELICOPTER ROLLED ONTO ITS RIGHT SIDE. NO MECHANICAL DEFECTS WERE DISCOVERED WHEN THE ENGINE WAS EXAMINED AFTER THE ACCIDENT.
Probable Cause: A TOTAL LOSS OF ENGINE POWER FOR AN UNDETERMINED REASON AS THE HELICOPTER WAS PERFORMING AERIAL APPLICATION MANEUVERS.
Accident investigation:
 |
|
Sources:
NTSB CHI92DCD04
History of this aircraft
Other occurrences involving this aircraft
| 9 June 1987 | N8286 | Bonanza Valley Aviation | 0 | Grafton, ND | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Mar-2024 19:55 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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