As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRAILING EDGE FLAP DISAGREE EICAS MESSAGE ON APPROACH WHEN FLAPS 20 WERE SELECTED SPEED APPROX 190 KIAS. INDICATOR SHOWED 17 DEGREES WHEN LIGHT CAME ON. APPROACH WAS DISCONTINUED DECLARED EMERGENCY AND ADVISED ATC OF NATURE OF PROBLEM.