As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE PILOT REPORTED A THUMP WHEN POWER WAS INCREASED OR DECREASED. MAINTENANCE TRACED THE PROBLEM TO A LOOSE LINER IN THE FORWARD NOSE GEAR SPRING (DRAG LINK) SUPPORT. THE LINER COULD BE SEEN TO MOVE FORWARD AND AFT WITH THE APPLICATION OF POWER.