KENNEWICK, WA, USA
N7090A
CESSNA 172
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.
Source: NTSB Aviation Accident Database
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