NTSB Identification: MKC85LA163.
The docket is stored on NTSB microfiche number 28319.
Accident occurred Saturday, July 20, 1985 in FOREST CITY, IA
Aircraft: CESSNA 182, registration: N5699B
Injuries: 3 Minor,2 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.

SHORTLY AFTER THE ACFT TOOK OFF WITH 4 SKYDIVERS ON BOARD, ITS ENG SEIZED AT AN ALT OF ABOUT 300 TO 400 FT. THE PLT SELECTED THE BEST AVAILABLE AREA TO LAND WHICH WAS A FIELD OF TALL CORN ON ROLLING TERRAIN. DURING THE EMERG LANDING, THE ACFT NOSED OVER. LATER, THE ENG WAS DISASSEMBLED & APRX 1 QT OF FINELY GROUND FERREOUS MATERIAL WAS FOUND DEPOSITED IN THE LOWER OIL PAN. THE MAIN BEARINGS WERE FOUND SCORED & DISCOLORED, & THE MAIN BEARING SHELLS SHOWED EVIDENCE OF OVERHEATING. THE CONNECTING RODS WERE ALSO DISCOLORED FROM HEAT. THE SCREEN CHAMBER OF THE OIL PUMP WAS FOUND FULL OF FERROUS METAL WHICH SHUT OFF THE OIL SUPPLY TO THE OIL PUMP GEARS. THE FAA MAINT INSPECTOR WHO EXAMINED THE ENG STATED THAT THE FERROUS MATERIAL FOUND IN THE ENG & BOTTOM PAN WAS NOT FROM THE ENG. THE SOURCE OF THE MATERIAL WAS NOT DETERMINED.

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

FLUID,OIL..CONTAMINATION

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

LUBRICATING SYSTEM..BLOCKED(TOTAL)

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

FLUID,OIL..STARVATION


Contributing Factors

TERRAIN CONDITION..CROP

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