What was found
COUNTERWEIGHTS ON PROPELLER BLADES SLIPPING. AIR CREW NOTICED INSTRUMENT'S VIBRATION DURING FLIGHT. ON GROUND, MAINTENANCE CREW COULD NOT BALANCE PROPELLER. NOTICED COUNTERWEIGHTS HAD SLIPPED OUT OF ORIGINAL POSITION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
COUNTERWEIGHTS ON PROPELLER BLADES SLIPPING. AIR CREW NOTICED INSTRUMENT'S VIBRATION DURING FLIGHT. ON GROUND, MAINTENANCE CREW COULD NOT BALANCE PROPELLER. NOTICED COUNTERWEIGHTS HAD SLIPPED OUT OF ORIGINAL POSITION.