What was found
PILOT REPORTED ON GEAR EXTENSION, INTRANSIT LIGHT ILLUMINATED MOMENTARILY, THEN GEAR HANDLE CIRCUIT BREAKER TRIPPED, LOST ALL GEAR INDICATIONS, FOLLOWED CHECKLIST, EXTENDED GEAR MANUALLY, THREE GREEN OBSERVED, LANDED WITHOUT FURTHER INCIDENT, EMERGENCY DECLARED. MX R & R THE LANDING GEAR SERVICE VALVE, SWUNG THE GEAR, OPS CHECKED GOOD.