As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2022 - NR 1 ROLL SPOILER INBOARD HYDRAULIC CAUTION FLICKERED ON AND OFF INTERMITTENTLY 8-10 TIMES, REMAINED OFF FOR FIVE MINUTES, THEN STAYED ON REMAINDER OF FLIGHT. REPLACED NR 1 INBOARD SPOILER PRESSURE SWITCH AND COMPLIED WITH FUNCITONAL CHECK OF THE ROLL SPOILER CONTROL SYSTEM. OPERATIONAL CHECKS GOOD. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.