As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - WHILE PERFORMING ENG TEST3 GRD IDLE TEST, LT ENG WOULD NOT RETURN TO GRD IDLE. CHK'D FOR 28VDC AT SOLENOID ON LT ENG MEC, NONE FOUND. CHK'D FOR 28VDC AT PIN 32 ON EEC DISCRETE CARD NONE FOUND. CONFIRMED 28VDC AT INPUT TO CARD AT PIN 62. SUSPECT EEC DISCRETE CARD U/S. REMOVED AND REPLACED EEC DISCRETE CARD FOR NR 1 ENG OPS CHK OK.