As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2169 IND/LGA IN CRUISE FL290 RECEIVED "FLAP FAILURE" MESSAGE, PERFORMED QRH PROCEDURES AND DIVERTED TO DTW. MAINTENANCE TROUBLESHOT FLAP SYSTEM AND FOUND RIGHT AND LEFT BPSU (BRAKE POSITION SENSING UNIT) TO BE OUT OF RIG. RIGGED BPSU'S PER AMM, PERFORMED OPERATIONAL CHECKS WITH NO DEFECTS FOUND.