As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MUSTY/BURNY SMELL COMING FROM AFT GALLEY, CAN SMELL THESE FUMES FROM MID CABIN TO AFT TO THE GALLEY, SMELL STRONGER THE FURTHER AFT YOU GO. NO SMOKE ONLY FUMES. PREFORMED GVI OF AFT GALLEY AND COFFEE MAKERS. NO DAMAGE OR ODORS NOTED. COMPLIED WITH WORK CARD 0550-6001 AND 0550-2003. DETERMINED SOURCE TO BE LEFT ENGINE. LEFT ENGINE BLED. FWD TO MEL REF LOG 8483804. COMPLIED WITH MSI PREVENTION CHECKLIST. A/C OK FOR SERVICE. (LP# 9110494; AIRCRAFT WAS GROUNDED)