ASN Wikibase Occurrence # 367946
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| Date: | Tuesday 26 September 1989 |
| Time: | 21:02 LT |
| Type: |  Cessna 210B |
| Owner/operator: | David Gibbs |
| Registration: | N9615X |
| MSN: | 21057915 |
| Total airframe hrs: | 4170 hours |
| Engine model: | CONTINENTAL IO-470-S |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Newport Beach, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Palm Springs, CA (PSP |
| Van Nuys, CA (KVNY) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT, WHO HAD JUST PURCHASED THE AIRCRAFT, EXPEREINCED A TOTAL LOSS OF ENGINE POWER WHILE CRUISING & HE DITCHED HIS AIRCRAFT IN A HARBOR. THE AIRCRAFT SANK. UPON ITS SUBSEQUENT RECOVERY, IT WAS EXAMINED, & ITS CRANKSHAFT WAS FOUND FRACTURED. A METALLURGICAL EXAM REVEALED THE PRESENCE OF A SURFACE ORIGIN FATIGUE CRACK, WHICH HAD PROPAGATED IN THE AREA OF THE NO 4 CRANKSHAFT CHEEK BETWEEN, THE NO 2 MAIN JOURNAL & THE NO 3 CRANKPIN JOURNAL. THE FRACTURE HAD INITIATED IN THE FORWARD FILLET RADIUS OF THE NO 2 MAIN JOURNAL. NO EVIDENCE WAS FOUND OF ANY PREEXISTING MATERIAL DEFECTS IN THE CRANKSHAFT METAL. ABOUT 10 YEARS & 1166 OPERATING HOURS BEFORE THE ACCIDENT, THE ENGINE HAD REPORTEDLY UNDERGONE A MAJOR OVERHAUL. THE AIRCRAFT'S MAINTENANCE RECORDS WERE INCOMPLETE & THE ADEQUACY OF THE PREVIOUS MAINTENANCE COULD NOT BE ADEQUATELY DOCUMENTED.
Probable Cause: THE FATIGUE FAILURE OF THE ENGINE'S CRANKSHAFT, RESULTING IN A TOTAL LOSS OF POWER OVER UNSUITABLE TERRAIN. THE PILOT DITCHED THE AIRPLANE BECAUSE HE WAS UNABLE TO GLIDE TO SHORE.
Accident investigation:
 |
|
Sources:
NTSB LAX89LA327
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 20:31 | ASN Update Bot | Added |
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