As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - A/C WAS EN ROUTE TO IAH FROM LEX WHEN THE CREW GOT A FUEL IMBALANCE INDICATION IN FLIGHT RESULTING IN A 1200LBS DIFFERENCE AT FL230. AIRCRAFT DIVERTED. MAINTENANCE RELEASED ACFT IAW MEL 28-40-00/2 CATEGORY "B". IAH MAINTENANCE REMOVED AND REPLACED LEFT NR 2 FUEL TANK UNIT IAW MM 28-41-02. OPS CHECKED GOOD AND C/W REVERSED DDP PROCEDURES AND CLEARED MEL. AIRCRAFT RETURNED TO SERVICE.