ASN Wikibase Occurrence # 374504
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Date: | Thursday 31 July 1986 |
Time: | 09:20 LT |
Type: | Cessna 150H |
Owner/operator: | Private |
Registration: | N50101 |
MSN: | 15069063 |
Year of manufacture: | 1968 |
Total airframe hrs: | 4343 hours |
Engine model: | CONTINENTAL O-200-A |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Bartlesville, OK -
United States of America
|
Phase: | En route |
Nature: | Unknown |
Departure airport: | |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:THE PLT TOOK OFF ON A TEST FLT AFTER AN ANNUAL INSPN OF THE ACFT & A TOP OVERHAUL OF THE ENG HAD BEEN COMPLETED. WHILE CLIMBING THRU ABOUT 1200 TO 1300 FT AGL, THE ENG STARTED RUNNING ROUGH, THEN QUIT. THE PLT ATTEMPTED TO RETURN TO THE ARPT, BUT WAS UNABLE. SUBSEQUENTLY, SHE LANDED THE ACFT IN AN AREA OF DENSE BRUSH & TREES. AN INV REVEALED THAT THE ROCKER ARM SUPPORT STRUCTURE ON THE #3 CYLINDER HAD FAILED, RELEASING THE ROCKER ARM SHAFT & BOTH ROCKER ARMS. TEARDOWN OF THE ENG REVEALED THAT THE #3 EXHAUST VALVE GUIDE WAS AN INCORRECT PART & WAS OVERSIZE IN LENGTH BY 0.165 INCH. THE OVERSIZE GUIDE WOULD NOT ALLOW FULL VALVE MOVEMENT & THE RESIDUAL MOVEMENT RESULTED IN FAILURE OF THE ROCKER ARM SUPPORT STRUCTURE.
Probable Cause:
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | FTW86LA141 |
Status: | Investigation completed |
Duration: | |
Download report: | Final report |
|
Sources:
NTSB FTW86LA141
Location
Revision history:
Date/time | Contributor | Updates |
28-Mar-2024 10:08 |
ASN Update Bot |
Added |
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