As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT THE FLIGHT CREW REPORTED THAT THE LEFT GEAR WAS SLOW TO EXTEND. MAINTENANCE PERSONNEL TROUBLESHOT SYSTEM AND FOUND LEFT EXTENSION VALVE BAD. PROBABLE CAUSE IS BELIEVED PARTICIALS INSIDE OF VALVE WHICH PREVENTED FLUID TO FLOW UNRESTRICTED.