As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT PULLED TO THE RIGHT ON LANDING ROLL. #1 BRAKE NEVER ENGAGED. TEMPERATURE REMAINED AT 15 C WHILE #2 BRAKE CLIMBED TO +500 C. FOUND FORWARD HYDRAULIC LINE QUICK RELEASE COUPLING ON #1 BRAKE DISCONNECTED, REINSTALLED AS REQUIRED.