As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR RETRACTION, THE RT MAIN GEAR RED & GREEN LIGHTS REMAINED ILLUMINATED. GEAR DID NOT RETRACT. FLIGHT RETURNED TO FIELD WITH GEAR DOWN & ALL 3 GREEN ILLUMINATED. TROUBLESHOT TO NLG RETRACT HYD FUSE. R & R FUSE IAW AMM 32-31-71. PERFORMED OPERATIONAL CHECK IAW AMM 32-32-00-715-001 & 32-33-00-735-005.