As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI TO RUNWAY FOR TAKEOFF CREW OBSERVED THE ILLUMINATION OF THE RT ENG FIRE HANDLE. CREW ACCOMPLISHED THE EMERGENCY PROCEDURES FOR ENG FIRE. SECURED THE ENG AND RETURNED TO GATE. REMOVED AND REPLACED NR 2 ENG FIRE BOTTLE/SQUIB P/N 30100023, S/N 29392A1.