As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BNA - EMERGENCY LANDING - FLT 966 - FLAP DISAGREE INDICATOR. LEFT FLAP 1, RIGHT FLAP 1.75. AFTER RUNNING SHUTDOWN CHECK LIST THE FLAP INDICATOR CORRECTED TO 1 ON EACH SIDE. PILOT DECLARED EMERGENCY, EMERGENCY EQUIPMENT MET AIRCRAFT AND AIRCRAFT TAXIED TO GATE. REPLACED LEFT FLAP TRANSMITTER AND INDICATOR IAW B737-400 AMM 27-58-12-4.