As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE GOT R BLEED AIR DUCT WARNING MESSAGE. RAN QRH PROCEDURE. DECLARED AN EMERGENCY AND DIVERTED TO MKE. (FLT#4037) CLOSED CLEANED CONNECTIONS MT144P1, MT144P2, AND MT204P2. REPOSITIONED SECTION OF LOOP MT204 THAT WAS CONTACTING THE #1 HYDRAULIC ACCUMULATOR. PERFORMED AILC TEST NO FAULTS FOUND. BLEED LEAK DETECTION SYSTEM OPS CHECK GOOD AT THIS TIME. ALL WORK DONE IAW AMM.