As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL-FLIGHT#3686. CREW REPORTED LOSS OF #1 HYDRAULIC SYSTEM FLUID JUST AFTER TAKEOFF.EMERGENCY DECLARD, AND AIRCRAFT RETURNED TO FIELD. MAINTENANCE INSPECTED AIRCRAFT AND FOUND INBOARD RIGHT ROLL SPOILER ACTUATOR CRACKED AND LEAKING. INBOARD RIGHT ROLL SPOILER ACTUATOR REPLACED IN ACCORDANCE WITH DEHAVILLAND DASH 8 MAINTENANCE MANUAL 27-14-05. LEAK CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.