As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR DID NOT EXTEND WHEN SELECTED. PILOT EXTENDED GEAR MANUALLY AND LANDED WITHOUT INCIDENT. MAINTENANCE DETERMINED THAT THE HYDRAULIC POWER PACK MOTOR RELAY HAD WELDED IN THE CLOSED POSITION RESULTING IN THE MOTOR RUNNING CONTINOUSLY UNTIL IT FAILED. (K)