As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENGINE FAILED TO START NORMALLY. IN MANUAL MODE START WAS SUCCESSFUL. SUBSEQUENT START, GENERATOR WAS INOPERATIVE. EXTENSIVE TROUBLESHOOTING FINALLY DETERMINED THAT THE STARTER-GENERATOR HAD SIEZED, STRIPPING PLASTIC DRIVE ADAPTER IN ENGINE. DRIVE ADAPTER WAS REPLACED, ALONG WITH A SERVICEABLE STARTER-GENERATOR, SYSTEMS FUNCTION NORMALLY.