As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - TAKEOFF ABORT AT 50 KTS DUE TO TAKEOFF WARN HORN ON RWY 16L SEA CONFIGURATION LOOKED GOOD. UPON INSPECTION FOUND PARKING BRAKE LOCK TRIGGER INTERMITTENT, CLEANED AND LUBED MECHANISM, AFTER C/W TASK AMM 31-52-00-720-801 OPS CHECKED GOOD. RETURNED TO SERVICE. NO PARTS REPLACED.