As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3102 - HPN-DCA - THE LEFT MAIN GEAR WOULD NOT RETRACT ON TAKEOFF. CYCLED THE GEAR AND IT RETRACTED NORMALLY. THE FLIGHT CONTINUED ON TO DCA AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED THE RETURN AND PRESSURE MANIFOLD FILTERS ON THE NR 2 HYDRAULIC SYSTEM. PERFORMED GEAR SWING SEVERAL TIMES AND NO DISCREPANCIES WERE NOTED. (M)