As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED A BURNING POPCORN SMELL WHILE ENROUTE. THE SMELL DISSIPATED. NO MEDICAL ATTENTION REQUIRED. PERFORMED OPS CHECK OF THE TEMPERATURE CONTROL SYSTEM IAW AMM 21-60-00-710-801. OPS CHECK GOOD AT THIS TIME. DURING OPS CHECK, NO ODORS WERE NOTED. AFTERWARDS, NOTED BURNING SMELL IN GALLEY, COMING FROM LH COFFEE MAKER. REMOVED AND REPLACED IAW VCMM 25-33-21. NO ODOR NOTED WHEN OPERATING COFFEE MAKER.