NTSB Identification: ATL85LA188.
The docket is stored on NTSB microfiche number 28462.
Accident occurred Tuesday, May 21, 1985 in MONTICELLO, GA
Aircraft: CESSNA 172N, registration: N6201E
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

ABOUT 20 MIN AFTER TAKEOFF, WHILE CRUISING AT 5000 FT, THE PLT OBSERVED OIL ON THE WINDSHIELD & NOTED A DECREASE IN OIL PRESSURE. HE TURNED BACK TOWARD THE DEPARTURE ARPT & REDUCED THE POWER IN AN ATTEMPT TO PROLONG ENG LIFE. A SHORT TIME LATER, THE ENG BEGAN RUNNING ROUGH, THEN FAILED. THE ACFT WAS OVER AN AREA OF GND FOG & THE PLT COULD NOT SEE THE GND. HE BEGAN GLIDING AT A MIN RATE OF DESCENT & TRIMMED THE ACFT. BEFORE ENTERING THE FOG, THE OCCUPANTS FASTENED THEIRSEAT BELTS & BRACED THEMSELVES FOR IMPACT. SHORTLY AFTER THE ACFT ENTERED THE FOG, IT HIT 6 TREES, THEN CRASHED IN A CLEARING. DURING A POST-CRASH EXAM, THE OIL DIP STICK WAS FOUND BEHIND THE ENG & THERE WAS INDICATIONS THAT OIL HAD ESCAPED FROM THE TOP OF THE ENG. THE #1 CONNECTING ROD HAD FAILED & PUNCTURED THE ENG CASE. A TEARDOWN OF THE ENG REVEALED EVIDENCE THAT THE ENG HAD BEEN OPERATING WITHOUT OIL PRIOR TO THE ROD FAILURE.

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

LUBRICATING SYSTEM..OTHER

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

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

LUBRICATING SYSTEM..LEAK

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

FLUID,OIL..EXHAUSTION


Contributing Factors

LIGHT CONDITION..DUSK


Contributing Factors

WEATHER CONDITION..FOG


Contributing Factors

OBJECT..TREE(S)

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