As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON T.O. A STRONG ODOR WAS DETECTED ON THE FLIGHT DECK. RAN SUPPLEMENTAL PROCEDURE FOR ELIMINATION OF ODOR / FUMES. ISOLATED PACK 1. ODOR WAS ELIMINATED. CONTINUED FLT WITH PACK 1 ISOLATED-PERFORMED TSM 05-50-00-810-831-A. FOUND PACK 1 TO BE THE CAUSE OF ODOR. REF LOG PAGE 2886809-02