What was found
RTB DUE TO AIR/GRND EICAS MESSAGE ON TAXI-OUT, REPLACED PSEU. OPS CK NORMAL. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
RTB DUE TO AIR/GRND EICAS MESSAGE ON TAXI-OUT, REPLACED PSEU. OPS CK NORMAL. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.