As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, THE RIGHT RED INTRANSIT LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. THE GEAR WAS CYCLED DOWN AND ALL THREE GREEN DOWN AND LOCKED LIGHTS ILLUMINATED. THE AIRCRAFT RETURNED TO SBP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RIGHT UPLOCK SPRING BROKEN, THE SPRING WAS REPLACED AND GEAR SWINGS PERFORMED.