NTSB Identification: CHI84LA130.
The docket is stored on NTSB microfiche number 23877.
Nonscheduled 14 CFR
Accident occurred Wednesday, March 14, 1984 in CHICAGO, IL
Aircraft: CESSNA 401, registration: N777CS
Injuries: 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.

THE ACFTS LEFT MAIN GEAR COLLAPSED DURING THE LANDING ROLL. INVESTIGATION REVEALED THAT THE BOLT ON THE TOP PORTION OF THE LH BELLCRANK ASSEMBLY WAS SHEARED OFF. ONE OF THE TANGS AT THE BOTTOM OF THE BELLCRANK WAS ALSO BROKEN. WHEN EXAMINED UNDER A 10 POWER MICROSCOPE THE FRACTURED REVEALED INSTANTANEOUS OVERLOAD CHARACTERISTICS.

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

LANDING GEAR,MAIN GEAR ATTACHMENT..FAILURE,TOTAL

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

MAINTENANCE..POOR..COMPANY MAINTENANCE PERSONNEL

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