As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON DISSASSEMBLY OF DRIVESHAFT FOR ROUTINE SERVICING AND INSPECTION IN ACCORDANCE WITH BELL 206L-1 MM , SUBJECT SPRING WAS FOUND BROKEN AND DISLODGED WITHIN THE COUPLING HOUSING CAUSING DAMAGE TO BOTH THE SPHERICAL COUPLING SURFACE AND OUTER COUPLING.NO SIGNS OF COUPLING OVERHEAT NOR GREASE LEAKAGE WAS FOUND. DRIVESHAFT COUPLING COMPONENTS REPLACED WITH NEW PARTS.