As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SYR-FLIGHT#3963. CREW REPORTED THAT THE #2 HYDRAULIC ISOLATION VALVE CAUTION LIGHT ILLUMINATED AFTER GEAR EXTENSION. 1.4 QUARTS REMAINING IN #2 SYSTEM. MAINTENANCE REPLACED A HYDRAULIC LINE IN THE LEFT WHEEL WELL IN ACCORDANCE WITH THE DEHAVILLAND DASH 8 MAINTENANCE MANUAL CHAPTER 29-00-00. LEAK CHECK WAS GOOD. AIRCRAFT RETURNED TO SERVICE.