As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AFTER START, SECOND ENGINE ON TAXI, RIGHT PACK LIGHT ILLUMINATED, EXTINGUISHED ON RECALL. GROUNDED - YES. #2 TEMPERATURE CONTROL VALVE FAILED BITE TEST, REMOVED AND REPLACED #2 TEMPERATURE CONTROL VALVE IAW AMM 21-51-10-000-801 AND AMM 21-51-10-400-801. LEAK CHECK GOOD. GROUND FUNCTIONAL CHECK FOR THIS ETOPS SIGNIFICANT SYSTEM GOOD IAW AMM 21-61-00-700-806-002.