As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GTF FLIGHT: DURING CLIMB-OUT FROM HLN, SPOILER OUTBOARD CAUTION LIGHT ILLUMINATED. RAN CHECKLIST, NO ADDITIONAL/ASSOCIATED LIGHTS. THIS CAUTION LIGHT CAME ON BETWEEN 185-185 KNOTS. MAINTENANCE REMOVED AND REPLACED NR 2 UNLOAD VALVE IAW Q400 AMM 27-61-26-000-801/400-801. OPS CHECK GOOD. NO LEAKS NOTED. THE VALVE WAS CHANGED FOR PRECAUTIONARY MEASURE. AIRCRAFT RETURNED TO SERVICE.