What was found
FA REPORTED STRONG ELECTRICAL BURNING ODOR NEAR AFT GALLEY JUST AFTER STARTING BOTH ENGINES. ODOR DISSIPATED 5-10 MIN LATER. NO VISIBLE SMOKE OBSERVED. RETURNED TO GATE. INSPECTED COFFE MAKERS IN AFT GALLEY. NO DEFECTS NOTED. CHECKED AFT LAVS AND NO DEFECTS NOTED. USING SMOKE AND FUME QUESTIONARE FOUND SMOKE/FUME EVENT TO BE TYPE 9. RAN RECIRC FANS FOR OVER ONE HOUR WITH NO ODORS OR SMOKE PRESENT. PER AMDS JIC 0550-2002 ACFT IS OK FOR RETURN TO SERVICE WITH NO FURTHER MX ACTION REQUIRED. (LP: 8337396, AIRCRAFT WAS GROUNDED)