ASN Wikibase Occurrence # 359234
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| Date: | Friday 17 March 1995 |
| Time: | 05:00 LT |
| Type: |  Bell TH-13T |
| Owner/operator: | Hansen Helicopters, Inc. |
| Registration: | N6569H |
| MSN: | 3683 |
| Total airframe hrs: | 8132 hours |
| Engine model: | LYCOMING VO-435-A/F |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Harmon Field, -
 United States of America
|
| Phase: | Approach |
| Nature: | Executive |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS PROCEEDING TO A LANDING AREA AT 400 FEET AGL WHEN HE EXPERIENCED A LOSS OF ENGINE POWER. HE AUTOROTATED INTO DENSE JUNGLE TERRAIN. EXAMINATION OF THE ENGINE REVEALED THAT THE OIL PRESSURE RELIEF VALVE WAS MISSING. THIS WAS THE FIRST FLIGHT SINCE A 100-HOUR INSPECTION WAS MADE THE DAY BEFORE. THE INSPECTION OF THE SAFETY WIRE SECURING THE VALVE IS NOT A PREFLIGHT ITEM FOR THE PILOT, NOR IS IT REQUIRED TO BE INSPECTED PRIOR TO FLIGHT.
Probable Cause: an engine failure due to oil exhaustion from a missing oil pressure relief valve as the result of an improper maintenance inspection.
Accident investigation:
 |
|
Sources:
NTSB LAX95LA138
History of this aircraft
Other occurrences involving this aircraft
| 29 January 1996 | N6569H | Hansen Helicopters Inc | 1 | Honiara, Guadalcanal |  |
w/o |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 08:23 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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