As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ADVANCED THE POWER FOR T/O AND GOT T/O CONFIG WARNING HORN AND LIGHT ALONG WITH A FALSE RED PARKING BRAKE EICAS MSG. WE WERE ROLLING T/O AND WERE BELOW 60 KTS. THE PARKING BRAKE WAS NOT SET. RAN CONFIG TEST IAW AMM. PARK BRAKE SWITCH CKS, GOOD. REPLCD PARK BRAKE VALE AS PRECAUTIONARY IAW AMM. ALL CKS GOOD ETOPS CATEGORY (E): PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.