ASN Wikibase Occurrence # 384482
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| Date: | Tuesday 4 May 1982 |
| Time: | 17:00 LT |
| Type: |  Sikorsky S-55B |
| Owner/operator: | Harral Helicopter |
| Registration: | N16861 |
| MSN: | 55-729 |
| Total airframe hrs: | 4675 hours |
| Engine model: | WRIGHT C7BA |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Otsego, OH -
 United States of America
|
| Phase: | Taxi |
| Nature: | Unknown |
| Departure airport: | Otsego, OH |
| Otsego, OH | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS SPREADING FERTILIZER BY USING EXTERNAL BUCKETS. AS HE WAS UNHOOKING A BUCKET, THE ENGINE LOST POWER. HE DID A HOVERING AUTOROTATION, BUT THE HELICOPTER SETTLED ON A BUCKET, TIPPED OVER AND ALLOWED THE MAIN ROTOR BLADES TO HIT THE GROUND. AN EXAMINATION REVEALED THAT THE ENGINE HAD MECHANICAL CONTINUITY AND THE FUEL SYSTEM WAS CLEAN AND WORKING PROPERLY. HOWEVER, EVIDENCE OF ARCING WAS FOUND IN THE MAGNETO SWITCH CASE. ALSO, SIGNS WERE FOUND THAT INDICATED MOISTURE HAD BEEN PRESENT IN THE SWITCH. REPORTEDLY, THE ENGINE OPERATED NORMALLY AFTER THE SWITCH WAS REPLACED.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB CHI82DA150
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 11:39 | ASN Update Bot | Added |
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