As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT CABIN BECAME HOT FOR ABOUT ONE MINUTE WHICH CAN BE NORMAL BUT FLIGHT ATTENDANT SAID CABIN HAD SMOKEY HAZE FOR ABOUT TWO MINUTES. "TRANSFERRED FROM AML PAGE 4944502 ITEM 1"-C/A-WHILE PERFORMING FIM TASK 21-20-00 FOUND COFFEE RESIDUE ON THE R/H HEAT EXCHANGER. PERFORMED DUAL HEAT EXCHANGER # 2 CLEANING IAW EO EJ-2100-006. REF NRWC 079-DFW-01790 AND 079-DFW-01791.WHILE PERFORMING OPS CHEKS NO HAZE NOTED. OPC GOOD.