As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. BOS LANDING UNEVENTFUL. TRAILING EDGE FLAP DISAGREE INDICATOR STOPPED JUST AFTER 2 DEGREES WHEN FLAP 5 WAS SELECTED. REMOVED AND REPLACED LEFT FLAP POSITION TRANSMITTER ASSEMBLY IAW AMM 27-58-01. OPERATIONAL CHECK GOOD.