As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH APU BLEED OPEN POWERING RIGHT PACK LEFT WING BODY OVERHEAT LIGHT ILLUMINATED APU BLEED PLACED OFF AFTER DELAY LIGHT WENT OUT LATER F/A NOTICED BURNING SMELL IN MID CABIN AREA. FOUND APU BLEED LINE CRACKED JUST AFT OF APU BLEED VALVE. REPLACED BLEED DUCT.