NTSB Identification: NYC85LA186.
The docket is stored on NTSB microfiche number 28127.
Accident occurred Saturday, July 20, 1985 in STOWE, VT
Aircraft: PIPER PA-18-95, registration: N5777D
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.

DURING CRUISE FLT, THE PLT HEARD A LOUD KNOCKING COMING FROM THE ENG AND A DECREASE IN OIL PRESSURE. DURING THE LANDING IN A FLD, THE LANDING GEAR COLLAPSED AND THE ACFT GROUND LOOPED. EXAMINATION OF THE ENG DISCLOSED THAT THE HYDRAULIC LIFTERS OF THREE OF THE FOUR CYLINDERS HAD FAILED. THE CORRESPONDING INTAKE AND EXHAUST VALVES WERE NOT OPENING PROPERLY DURING ENG OPERATION.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,PUSH ROD..DISABLED

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TERRAIN CONDITION..ROUGH/UNEVEN

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ENGINE ASSEMBLY,VALVE,INTAKE..DISABLED

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