As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CRUISE F/A SMELT ODOR SIMILAR TO BURNT POPCORN NEAR ROW 33. ENG A/I WAS ON. SMELL DISSIPATED AFTER A/I AND LIGHTS WERE TURNED OFF. OPERATED PACKS BOTH INDEPENDENTLY AND TOGETHER IN FULL HOT POSITION. ALSO RAN BOTH ENG USING INDIVIDUAL ENGS ANTI ICE NO BURNT ODOR SCENTED.