As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NO RT MAIN GEAR GREEN INDICATION ON APPROACH, GEAR RECYCLED BUT STILL NO INDICATION. ACFT DIVERTED TO MAINTENANCE BASE, EMERGENCY HAND PUMP USED TO LOWER GEAR AND GREEN INDICATION WORKED, ACFT LANDED SAFELY WITH 3 GREEN INDICATION AND TAXIED BACK TO MAINTENANCE HANGAR. MAINTENANCE GEAR SWINGS CARRIED OUT WITH NO PROBLEMS BUT FOUND INTERMITTENT CONTACT IN RT GEAR DOWN LOCK MICROSWITCH, PN 101-364628-1. SWITCH REPLACED AND GEAR SWINGS CARRIED OUT WITH NO INDICATION PROBLEMS.