ASN Wikibase Occurrence # 288768
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| Date: | Saturday 5 November 2011 |
| Time: | 09:45 LT |
| Type: |  Siai-marchetti S205-22R |
| Owner/operator: | Orlandi Charles R Iii |
| Registration: | N729WA |
| MSN: | 388 |
| Total airframe hrs: | 2118 hours |
| Engine model: | Franklin 6A350C1R |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Okeechobee, Florida -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Okeechobee, FL (FD70) |
| Palm Beach, FL (F45) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the pilot, during climbout, the engine lost partial power and was running rough. The pilot was unable to restore the engine to full power and made a forced landing in a river. Examination and partial disassembly of the engine revealed that the alternator drive adaptor did not function, the alternator drive gear exhibited extensive wear, and the gear teeth were smeared. The alternator drive bearings were not present, and metal particles were found throughout the oil system in the engine. In addition, the engine alternator drive belt that was driven by the engine was not located and the alternator adjustment was on the maximum setting. According to the engine maintenance log, the alternator was replaced by the pilot/owner and was signed off by an airframe and powerplant mechanic. The airplane had accumulated 2 hours of flight time since the alternator was replaced by the pilot/owner. It is likely that the added pressure to the crankshaft from the alternator drive shaft and the metal in the engine resulted in the engine losing partial power.
Probable Cause: A partial loss of engine power due to a failure of the drive bearings in the alternator drive system. Contributing to the accident was the inadequate maintenance.
Accident investigation:
 |
|
Sources:
NTSB ERA12LA071
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 04:52 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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