NTSB Identification: ATL86IA098.
The docket is stored on NTSB microfiche number 31871.
Nonscheduled 14 CFR
Incident occurred Friday, March 14, 1986 in MC RAE, GA
Aircraft: CESSNA 404, registration: N408EX
Injuries: 1 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.

DURING CRUISE FLIGHT PILOT HEARD LOUD BANG FROM RIGHT ENGINE AND RIGHT PROPELLER FEATHERED. AIRCRAFT WAS DIVERTED AND LANDED WITH NO FURTHER DAMAGE AND NO INJURIES TO THE PILOT. SUBSEQUENT TEARDOWN OF ENGINE REVEALED FRACTURED CONNECTING ROD. EXAMINATION OF ROD REVEALED FATIQUE FRACTURE DUE TO SURFACE INCLUSION IN ROD SHANK. INCLUSION RESULTED FROM OXIDES WHICH FORMED DURING HEAT TREATMENT AND WERE NOT COMPLETELY REMOVED PRIOR TO SHOT PEENING.

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

ENGINE ASSEMBLY,CONNECTING ROD..FAILURE,TOTAL

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

ENGINE ASSEMBLY,CONNECTING ROD..FATIGUE

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