ASN Wikibase Occurrence # 365858
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| Date: | Wednesday 12 December 1990 |
| Time: | 17:57 LT |
| Type: |  Piper PA-28-151 |
| Owner/operator: | Private |
| Registration: | N4480F |
| MSN: | 28-7715036 |
| Total airframe hrs: | 5740 hours |
| Engine model: | LYCOMING O-320-E3D |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Jupiter, FL -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Fort Lauderdale, FL |
| Stuart, FL (KSUA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING CRUISE FLT ABOUT 1/2 MILE OFFSHORE AT AN ALT OF 500 FT, THE PLT STATED THAT HE HEARD A KNOCKING SOUND & THE ENG LOST POWER. UNABLE TO MAINTAIN ALT, HE DITCHED THE ACFT. THE ACFT WAS RECOVERED & THE ENG WAS REMOVED FOR FURTHER EXAM. EXAM OF THE ENG REVEALED THAT THE NO.2 CYL EXHAUST VALVE FAILED DUE TO A WORN VALVE GUIDE. THE INTERNAL DIAMETER OF THE VALVE GUIDE AT THE TOP MEASURED .539' & THE BOTTOM MEASURE .563'. FACTORY SPECIFICATIONS ARE .4985' TO .4995'. THE ENG LOGBOOKS WERE INSIDE THE ACFT & WERE NOT RECOVERED.
Probable Cause: PARTIAL LOSS OF ENGINE POWER DUE TO FAILURE OF AN EXHAUST VALVE, DUE TO A VALVE GUIDE THAT WAS WORN BEYOND SPECIFICATIONS.
Accident investigation:
 |
|
Sources:
NTSB MIA91LA043
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 14:48 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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