As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"FUME / AIR QUALITY / OVER EVENT APROACH. FLIGHT ATTENDENTS DESCRIBED BUENT RUBBER/ ELECTRICAL SMOKE ODOR. ODOR IN THE COCKPIT WAS MUSTY GYM SOCKS AND BURNT RUBBER, BUT NO TOO STRONG -ACCOMPLISHED TSM 05-50-00-810-831. FOR CABIN ODOR FOUND PACK 1 TO BE SOURCE OF ODOR"