As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOWL SMELL IN VENTS WHEN HI PRESSURE VALVE OPENS ON DESCENT TECHS DEBRIEFED CREW AND COMPLETED SMOKE/ODOR FORM PREVIOUS HISTORY DUE TO SMELL R/R PACK 1 OZONE CONVERTER FOLLOWING FSM 05-50-00-810-831-A. AMM 21-58-42-000-001-A. PERFORMED LEAK TEST, TEST OK. STILL NEEDS ENGINE RUN. PERFORMED ENG RUN OF BOTH ENGINES AND RAN APU WITH BOTH PACKS. RAN EACH BLEED AND PACK INDEPENDENTLY WITH NO SMELL NOTED. A/C GOOD FOR SEVICE.