As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, HIGH SPEED CHECKER BOARD CAME DOWN TO 230 KIAS AND LATER FILLED ENTIRE SPEED TAPE. DUE TO FLAP SYSTEM DEFERRAL AIR DATA SYSTEM AND EICAS BELIEVED FLAPS WERE IN A POSITION OTHER THAN ZERO, THUS CAUSING HIGH SPEED TAPE TO BE LOWER. FLAP DEFERRAL HAS BEEN CLEARED AND HIGH SPEED TAPE INDICATION IS NOW NORMAL.