As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT BLEED DUCT MASTER WARNING. FOUND LOOP MT 137 RESTING ON A HOT AIR DUCT, REPOSITIONED AWAY FROM DUCT. OP'S CHECKED GOOD IAW AMM 36-21-00. ALSO, CHECKED DUCTING FOR LEAKAGE, NONE FOUND. RAN AIR BLEED OF ENGINE 1 AND /OR APU WITH NO FAULTS NOTED.