As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HAD FAILURES OF THE HOUSING THAT CONTAINS THE STARTER DRIVE GEAR WITHIN A PERIOD OF 4 DAYS ON 2 SEPARATE ACFT. THE HOUSING THAT SURROUNDS THE DRIVE GEAR CRACKED AND CAUSED THE DRIVE GEAR TO SHIFT AWAY FROM THE RING GEAR ON THE PROP TO WHERE THE GEARS WHERE UNABLE TO MESH. CONTACTED THE MFG AND THEY SAID IMPROVEMENT HAVE BEEN MADE ON NEWER STARTERS TO BEEF THEM UP.