As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 343 - PHX - PVR - AIR TURNBACK - AFTER APPROXIMATELY 45 MINUTES INTO FLIGHT, CREW REPORTED LOSS OF BLUE HYDRAULIC SYSTEM. AIRCRAFT RETURNED TO PHX. MAINTENANCE REMOVED AND REPLACED THE RIGHT NR 3 SPOILER ACTUATOR, SYSTEM OPERATIONAL CHECK WAS GOOD.