As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS- BTB -AFTER ENGINE START RT PACK OFF LIGHT ILLUMINATED WITH RT PACK EICAS MESSAGE - PACK APPEARS TO BE OPERATING. PERFORMED FIM 21-51-00 FIG 105D, FOUND RT FLOW CONTROL AND SHUTOFF VALVE. REPLACED FLOW CONTROL AND SHUTOFF VALVE IAW AMM 21-51-01, OPS CHECK GOOD.