As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE WAS A BURNING SMELL /RUBBERY SCENT/ IN 4-5 ROW ZONE AREA NEAR FWD LEADING EDGE OF WING. INSP CABIN AREA 4-5 ROW AREA FWD OF LEADING EDGE OF WING. CLEANED DEBRIS FROM OVENS AND CLEANED SAME. PERFORMED HI PWR RUN OF ENGINES, NO DEFECTS NOTED. CHECKED CABIN LIGH BALLASTS IN SUSPECTED AREA.