NTSB Identification: SEA88LA089.
The docket is stored on NTSB microfiche number 36092.
Accident occurred Monday, May 09, 1988 in KENNEWICK, WA
Probable Cause Approval Date: 03/13/1989
Aircraft: CESSNA 172, registration: N7090A
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.

DURING LANDING ROLL THE AIRCRAFT'S NOSE GEAR BEGAN TO SHUDDER, WITH THE NOSE GEAR TURNING 90 DEGREES TO THE LEFT. THE AIRCRAFT THEN NOSED DOWN ONTO THE NOSE AND RIGHT WING. VISUAL EXAMINATION OF THE AIRCRAFT'S SHIMMY DAMPENER ARM ASSEMBLY REVEALED A PREVIOUS WELD WITHIN 1/2' OF A FRACTURE. THE FRACTURE SURFACES WERE ROUGH AND IRREGULAR IN APPEARANCE. THE NOSE GEAR STEERING ROD END BEARING BOLT WAS ALSO FRACTURED FROM WHAT APPEARED TO BE BENDING FORCES. NO RECORD OF A REPAIR TO THE NOSE GEAR SHIMMY DAMPENER ARM ASSEMBLY COULD BE FOUND IN THE AIRCRAFT'S MAINTENANCE LOG BOOKS.

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

LANDING GEAR,NOSE GEAR ASSEMBLY..FRACTURED

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

MAINTENANCE,MAJOR REPAIR..INADEQUATE..UNKNOWN

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