As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2015 - BIL-DEN - WHEN GEAR SELECTED DOWN. THE RIGHT GEAR UNSAFE LIGHT REMAINED ILLUMINATED, SHOWING RIGHT MAIN GEAR NOT EXTENDED. THE CREW CARRIED OUT EMERGENCY PROCEDURES. THE AIRCRAFT MADE A SAFE LANDING WITH NO FURTHER PROBLEMS. MAINTENANCE TROUBLE SHOT THE SYSTEM. FOUND THE RIGHT GEAR DOWNLOCK INDICATION SWITCH SENSOR BAD. REMOVED AND REPLACED SWITCH PER REF 32-61-81. SYSTEM OPS CHECKS GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)