As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAD VERY STRONG ACRID,OFFENSIVE ODOR COMING FROM FORWARD GALLEY AND FORWARD ENTRY AREA. ONE HOUR INTO FLIGHT THE THE WAS STILL PERVASIVE. THE AIRCRAFT WAS GROUNDED. ACCOMPLISHED SIC 05-96-70. FOUND FORWARD SILL DRAIN BLADDER THE CAUSE OF ODOR. REMOVED AND REPLACED THE BLADDER ASSEMBLY IAW AMM 38-31-03. NO ODOR. OK FOR SERVICE.