As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1719 - DFW-SEA - ON CLIMB-OUT AIRCRAFT HAD THE SMELL OF A PAK OVERHEAT FOLLOWED BY SMOKE IN THE CABIN. AIRCRAFT RETURNED TO DFW AND LANDED WITHOUT INCIDENT. FURTHER INVESTIGATION REVEALED A HOLE IN LEFT PACK HEAT EXCHANGER WATER SPRAY LINE. REMOED AND REPLACED LINE. PACK BURN ACCOMPLISHED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)