As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 1521 - ON POWER ADVANCE AT TAKEOFF WITH AIRCRAFT CONFIGURED 'FLAP' AURAL WARNING CAME ON. RETRACTED AND LOWERED FLAPS AND SLATS STILL HAD WARNING. FOUND FLAP TAKEOFF SWITCH LOOSE ON MOUNT AND MISSING SCREWS. REPLACED SCREWS AND REPOSITIONED SCREWS IAW MM 27-53-01. UNIT OPS CHECKS GOOD. NO DEFECTS NOTED. (M)