As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - AFTER BRAKE APPLICATION, NR 3 BRAKE HEATS UP MORE RAPIDLY AND HOTTER THAN NR 4 (7 VS 2); ALSO RIGHT BRAKE IS NOTICEABLY WEAKER THAN LEFT BRAKE. REMOVED AND REPLACED NR 3 MLG BRAKE ASSY, NO HELP. REMOVED AND REPLACED NR 4 MLG WHEEL SPEED TRANSDUCER. OP'S CHECKS ARE GOOD. ALL 4 BRAKE TEMPS HEAT UP EVENLY AND WITHIN LIMITS. MAINTENANCE PERFORMED IAW MTC NR R324301, AMM TASKS NR 32-44-01-000-801-A01 AND NR 32-44-01-400-801-A01. RETURNED TO SERVICE.