As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR FAILED TO EXTEND ON APPROACH. EMERGENCY PROCEDURES FOLLOWED AND AIRCRAFT LANDED SAFELY. LANDING GEAR PRINTED CIRCUIT BOARD CONTACTS CLEANED. LANDING GEAR TEST PERFORMED. NO FURTHER DEFECTS. REMOVED AND REPLACED P/N 686-4027-600 - LANDING GEAR LOGIC PCB, IAW MM32.0.00.303. PERFORMED GEAR SWING PER MM32.00.00.601. NO DEFECTS NOTED.