As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT RT ENGINE DID NOT STABILIZE AFTER START ON 1ST ATTEMPT .AC RETURNED TO GATE AND MAINTENANCE GROUNDED AC . MAINTENANCE PERFORMED RH ENG RUN PER AMM 71-00-00. AFTER 5 MIN RH ENG VALUES STABLE ( N1& N2 ). RH ENG OPERATES NORMAL. A/C REMAINS NO ETOPS. AC WAS RETURNED TO SERVICE