As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 GENERATOR CONTROL UNIT BEGAN TO SMOKE IN FLIGHT. AFTER TRIPPING OFF LINE, SMOKE STOPPED. FLT LANDED WITHOUT FURTHER INCIDENT AT CLT. MAINTENANCE REMOVED AND REPLACED THE NR 1 GENERATOR CONTROL UNIT. RAN ENGINE. OPS CHECK NORMAL. (M)