As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI---CO3404, CREW REPORTED, ELECTRICAL BURNING ODOR IN GALLEY AREA. MAINTENANCE INSPECTED GALLEY AND FIRST THREE ROWS OF THE CABIN AFT OF THE GALLEY AND FOUND BURNT COFFEE ON COFFEEMAKER HEAT PAD. CLEANED HEAT PAD, NO FURTHER MAINTENANCE REQUIRED. AIRCRAFT RETURNED TO SERVICE.