As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH AFTER FLAPS 1, A STRONG MUSTY ODOR FILLED THE COCKPIT SHUTTING OFF PACK 1 SEEMED TO HELP ODOD DISSIPATED THE SMELL-PERFORMED INSP TSM 05-50-00-810-831-A AND PERFORMED ENGINE RUN IAW AMM 71-00-00 ISOLATED PACK 1 WITH ENG 1 AND 2 AND ISOLATED PACK 2 WITH ENG 1 AND 2 NO DEFECTS NOTED CANNOT DUPLICATE ON GRAND A/C OK FOR SERVICE