As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP FAIL CAUTION MESSAGE. FLAPS AT ZERO. DIVERTED TO BWI. FOUND LT BPSU CODES CONTINUITY CHECK AND MEGGED LT WING WIRING PER WM AND FIM CHAP 27. NO FAULTS FOUND. CURRENT BPSU INSTALLED HAS REPEAT HISTORY OF FAULTS IN OTHER ACFT. SUSPECT BAD PART. REPLACED BPSU PER AMM CHAP 27. FLAP OPS CHECK GOOD. S/N OFF 2243, S/N ON 1995