As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ABOUT ONE HOUR INTO THE FLIGHT FUEL IMBALANCE EICAS MESS. NON NORMAL CHECKLIST COMPLETED FUEL IMBALANCE INCREASE TO 5500 LBS. RETURNED TIO FIELD, PAN PAN DECLARED FOR OVERWEIGHT LANDING. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)