As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING APPROACH,THE CREW SELECTED GEAR DOWN AND DID NOT GET A GREEN NOSE LOCKED INDICATION. THEY FLEW FOR ABOUT 20 MINUTES WHILE CYCLING THE GEAR TO TRY TO GET AN INDICATION. INSPECTION REVEALED THE NOSE GEAR DOWN AND LOCKED MICROSWITCH P/N 1CH21-4 WAS FOUND DEFECTIVE.