NTSB Identification: LAX02LA229.
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Accident occurred Tuesday, July 16, 2002 in Grass Valley, CA
Probable Cause Approval Date: 09/29/2004
Aircraft: Cessna T210M, registration: N761HP
Injuries: 1 Minor,3 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.

At touchdown following a normal approach, the pilot heard a "metallic clank" sound, the right main wheel broke, and the airplane veered off the runway into rough terrain and high vegetation. During the subsequent examination of the runway, black smudge marks were noted, which were consistent with a rubber transfer from the airplane's right main landing gear tire. Broken right wheel assembly components were found. The airplane was recovered from the accident site and the right main landing gear wheel assembly was examined. Upon disassembly, the inboard hub section was found broken at the inboard flange cap screws. The pilot reported he believed the hub was likely an original component, and its total time in service was 3,045.2 hours. The Cessna T210 series service manual indicates the landing gear main wheels should be removed and disassembled, and the components inspected every 50 hours. The airplane's maintenance records indicated it had been 4 years since new tires had been installed. There were no other maintenance entries to indicate that the wheel had been disassembled for inspection. An annual inspection was completed 9 months and 44 hours prior to the accident.

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

The failure of the right main landing gear wheel, which resulted in the pilot's inability to maintain directional control during landing rollout. A factor in the accident was the failure of maintenance personnel to inspect the wheel in accordance with maintenance manual instructions.

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