As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACRID ODOR DESCENDING THROUGH 1700 FEET DISSIPATED AFTER ISOLATING PACK 1-PERFORMED TSM 05-50-00-810-831-A. NO FUME FOUND. PERFORMED NORMAL OPS OF PACK 1 AND 2 WITH ENG IAW AMM 71-00-00, NO FUME / ODOR NOTED. MOC NOTIFIED AC OK FOR CONTINUED OPERATION