NTSB Identification: FTW84LA212.
The docket is stored on NTSB microfiche number 25204.
Accident occurred Tuesday, April 24, 1984 in SAN ANTONIO, TX
Aircraft: CESSNA 150M, registration: N45387
Injuries: 1 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.WHILE RETURNING TO ARPT THE PILOT EXPERIENCED A ROUGH RUNNING ENG WITH A DROP IN RPM. THERE WAS INSUFFICIENT POWER TO MAINTAIN FLT AND AN EMERGENCY LANDING WAS MADE ON A HIGHWAY. THE ACFT WAS DAMAGED DURING THE HARD LANDING. AN EXAM OF THE ENG REVEALED THAT THE #1 ROD ASSEMBLY HAD FAILED. THERE WAS EVIDENCE OF HIGH OIL CONSUMPTION. ONLY ABOUT 1 PINT OF OIL WAS FOUND REMAINING. THE 2ND RING ON PISTONS 2, 3 & 4 WERE OIL SCRAPER RINGS. THE 1ST AND 2ND RINGS ON EACH PISTON SHOULD HAVE BEEN COMPRESSION RINGS. ALSO, THERE WAS EVIDENCE OF OVERHEATING & THE #2, #3 & #4 ROD TO CRANKSHAFT BEARINGS WERE PITTED & GALLED.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
ENGINE ASSEMBLY,RING..IMPROPER
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
FLUID,OIL..STARVATION
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
ENGINE ASSEMBLY,CONNECTING ROD..FAILURE,TOTAL
Contributing Factors
LIGHT CONDITION..NIGHT
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