As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 9579 -ATB/DE- THE CREW ACCOMPLISHED AN AIR TURN BACK TO ATL DUE TO A "FLAPS DISAGREE" MESSAGE AFTER FLAP AND SLAT RETRACTION. AN EMERGENCY WAS DECLARED WITH ATC. CORRECTIVE ACTION: MAINTENANCE FOUND THE RIGHT FLAP POSITION TRANSMITTER OUT OF TOLERANCE, REPLACED TRANSMITTER AND PERFORMED ALL RETURN TO SERVICE TESTS. (LP #6857332)