As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6501 - IAD-JFK - DURING TAKEOFF, EXPERIENCED A TAKEOFF CONFIGURATION WARNING ACTIVATION. AIRCRAFT RETURNED TO THE GATE WHERE THE MX TECHS TROUBLESHOT THE DISCREPANCY AND FOUND THAT THE FLAP TRANSDUCER HAD FAILED. MAINTENANCE REPLACED THE FLAP TRANSDUCER IAW WITH ALL MX PROCEDURES. AIRCRAFT WAS THEN RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)