As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT: DEICE PRESSURE CAUTION LIGHT ILLUMINATED. RUNNING THE CHECKLIST, THE CREW NOTICED THE LEFT OUTBOARD BOOT LIGHT DIDN'T ILLUMINATE. THE DEICE PRESSURE IS NORMAL THROUGH ALL CYCLES. MAINTENANCE REMOVED AND REPLACED NR 5 DDV IAW AMM TASK 30-11-16-000-801 AND TASK 30-11-16-400-801. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.