As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED NR 1 PROPELLER WOULD NOT COME OUT OF FEATHER. INVESTIGATION FOUND THE SNAP RING (P/N 79-1210056) OF THE LOW PITCH STOP ROD ADRIFT. FURTHER INVESTIGATION REVEALED THE GUIDE LUG PIN HAD CAME OFF ITS SEAT AND FORCED THE SNAP RING OFF. THE PROPELLER ASSEMBLY WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.