As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 6259 - WHILE ON CLIMB-OUT, THE CREW RECEIVED A FLAP WARNING ALONG WITH A MASTER CAUTION WARNING. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED FLAP CONTROL BOX AND RIGGED FLAPS. AIRCRAFT RETURNED TO SERVICE. (M)