As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT. F/A IN AFT CABIN REPORTED MUSTY SMELL AFTER LANDING, TAXI INTO GATE. REF LOG PAGE 2223958-02 PACK 1 SOURCE OF FUMES. FAULT CAUTIONS ASSOCIATED WITH OPERATIVE SIDE NOT DISPLAYED. PER TSM 5-50-00-810-831 OPERATED ENGINES AND PACKS ISOLATING PACKS AND ENGINE AIR BLEED- FOUND PACK 1 TO BE SOURCE OF FUMES USING BOTH ENGINES BLEED-PACK 1 DEFERRED SEE LOG PAGE 2223959-1