As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA INFLIGHT DFW-PHL CREW REPORTED WING FUEL IMBALANCE. EMERGENCY DECLARED FLIGHT DIVERTED BNA LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND A DISCONNECTED FUEL LINE CLAMP IN THE CENTER TANK. RECONNECTED CLAMP. SYSTEM GROUND CHECKED NORMAL. OPERATION (CLOSED)