As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GENERATED WHILE IN HEAVY CHECK, DURING HEAVY CHECK TEST FLIGHT CREW REPORTED PARKING BRAKE NO RELEASED MSG INTERMITTENT IN FLIGHT. CREW DECLARED EMERGENCY AND LANDED AT CMH WITHOUT INCIDENT. MAINTENANCE T/S AND REMOVED AND REPLACED GEN I/O 1 IN MAU 1 SLOT 11/12 PER EMB AMM, OPS CHECK GOOD.