As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DRIVE SHAFT FOUND IN THE STARTER/GENERATOR AT BLOCK 8 IS AN UNAPPROVED PART. OTHERWISE, THE SHAFT IS SERVICEABLE (SUBJECT TO MPI) FOR USE IN OTHER MODELS OF THE 23048 SERIES STARTER/GENERATORS. THE SHAFT IN QUESTION IS A PMA PART. THE MANUFACTURER CONCURS THAT SHAFT P/N APC 23046-1121 IS NOT EQUIVALENT OR APPROVED AS A SHAFT P/N 23046-2153.