As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - F/O'S ADI & HSI WENT BLANK SELECTING ALTN EF1 CORRECTED FAULT. FAULT APPEARS INTERMITTENTLY. REPLACED RT SYMBOL GENERATOR. OPS CHECK OK IAW MM 34-22-01 PERFORMED MCDP GND TEST 30 CHECK OK. LMP STATUS TO REMAIN IN "LAND3" MODE.