As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DUE TO MIC 4500944 FWD GALLEY BURNING SMELL WHEN HEATER IS ON MUST ACCOMPLISH JC 72L00021001. MAINTENANCE ACCOMPLISHED CARD 72L00021001 SMOKE ODOR FUMES INITIAL TROUBLESHOOTING . REMOVED AND REPLACED FWD GALLEY HEATER PER AMM 21-45-04. AMM 21-45-00 OPERATIONAL TEST OF GALLEY HEATER CKS OK.