As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT, STRONG BURNT RUBBER SMELL WAS REPORTED IN AFT GALLEY. TAXIED BACK TO GATE. SMOKE AND FUMES QUESTIONNAIRE COMPLETED. PERFORMED CARD 0550-2002 TYPE 9 CLASSIFICATION FOR RUBBER SMELL ONLY IN AFT GALLEY. PERFORMED EXT GVI NO ITEMS NOTED. FOLLOWED FLOW CHART FIGURE 4 PG 13 NO FINDINGS. PERFORMED ENGINE RUN ON #1 AND #2 INDEPENDENTLY. NO ODOR NOTED. (LP# 8564872)