As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GEAR DID NOT GO DOWN ALL THE WAY WHEN PILOT SELECTED GEAR DOWN. PILOT USED HAND PUMP TO EXTEND LANDING GEAR THE REST OF WAY DOWN, GEAR LOCKED DOWN AND MADE NORMAL LANDING. ACFT WAS PUT ON JACKS AND FOUND THAT THE GEAR OPERATED INTERMITTENTLY, CAUSE OF THE INTERMITTENT OPS WAS FOUND TO BE AN INTERMITTENT RELAY, S1577A1 WHICH IS MOUNTED ON THE FIREWALL IN THE CABIN. RELAY WAS REPLACED AND GEAR OPERATED NORMALLY.