NTSB Identification: CHI82IA113
Nonscheduled 14 CFR Part 135: Air Taxi & Commuter
Incident occurred Monday, April 05, 1982 in WAUKEGAN, IL
Probable Cause Approval Date: 04/05/1983
Aircraft: CESSNA 402B, registration: N69341
Injuries: 3 Uninjured.

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

PILOT REPORTED AN OIL LEAK IN THE RIGHT ENGINE TO CONTROLLER WHILE ON AN INSTRUMENT APPROACH TO WAUKEGAN AIRPORT. SEVERAL MINUTES LATER, PILOT REPORTED THAT HE HAD LOST SIGHT OF THE AIRPORT AND DUE TO LOSS OF POWER IN THE RIGHT ENGINE, ELECTED TO LAND IN A PLOWED FIELD. ON LANDING, THE GEAR COLLAPSED. EXAMINATION OF THE RIGHT ENGINE OIL SCAVENGE PUMP REVEALED THAT THE DRIVE GEAR WAS FRACTURED INTO FIVE PIECES. FOUR OF THE FIVE FRACTURES BORE EVIDENCE OF AN OVERLOAD TYPE FAILURE. ONE FRACTURE SURFACE EXAMINED WAS DETERMINED TO HAVE BEEN PRE-EXISTING AN IT BORE EVIDENCE OF A FATIGUE TYPE FAILURE.

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

LANDING GEAR..OVERLOAD


Contributing Factors

LUBRICATING SYSTEM,OIL SCAVENGE PUMP..FAILURE,TOTAL


Contributing Factors

FLUID,OIL..LOSS,TOTAL

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