As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAJOR INSPECTION, DISCOVERED THE FREQUENCY ADAPTER WAS INCORRECT (TOO LONG). PILOT HAD JUST REPORTED A SERIOUS VIBRATION ON THE GROUND. REMOVED THE FREQUECY ADAPTER AND FOUND THAT 1 OF THEM HAD STRETCHED AND REQUIRED A COMPLETE TURN IN ON THE ROD END TO FALL BACK INTO RIGGING SPECICATIONS.