As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - BTB - "RIGHT ENGINE CONTROL"EICAS MSG. DISPLAYED AFTER NR 2 ENGINE STARTED. NR 2 ENG COWLS UNLATCHED FOR MAINTENANCE. REMOVED AND REPLACED NR 2 ENG EEC PER M/M C/W EEC STATIC TEST AND ENG RUN NO STATUS OR EICAS MSG. CLOSED ENG COWLS M/M REF 73-21-04.