As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLIMBING THROUGH FL270 RECEIVED "L BLEED DUCT LEAK" CAUTION MESSAGE AND ASSOCIATED "DUCT LEAK" LIGHT ON LEFT ISDE OF PNEUMATIC PANEL BLEED AIR PRESSURE BETWEEN LEFT AND RIGHT SYSTEMS WITHIN 5 PSI OF EACH OTHERINSPECTED FOUND LEFT WING HAS DAMAGED AIR DUCT R/R ON LOGPAGE 075334 ITEM 3