As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3221 - ATB - DUE TO AIR L WING LEAK MESSAGE. UNABLE TO CONTINUE DUE TO ICING CONDITIONS. FOUND CRACKED BLEED SUPPLY DUCT IN THE KEEL BEAM AREA AND DUCT AT APU CHECK VALVE CRACKED AT FLANGE. CORRECTIVE ACTION: BOTH KEEL BEAM AREA SUPPLY DUCTS AND APU CHECK VALVE DUCT REPLACED, VERIFICATION FLIGHT IN PROGRESS. (8636766)