As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4492 PIT-TTN, APPROXIMATELY 2 MINUTES AFTER STARTING THE LT ENGINE, THE LT DC GENERATOR WENT OFFLINE AND WOULD NOT RESET. A/C RETURNED TO GATE IN PIT. PIT MX INSPECTED LT DC GEN CONNECTIONS AND WIRING. PERFORMED GROUND RUN OF LT ENGINE. OPERATIONAL CHECKS WERE GOOD, COULD NOT DUPLICATE DISCREPANCY. A/C RETURNED TO SERVICE.