As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT LANDING GEAR DOOR WOULD NOT RETRACT AFTER TAKEOFF. RETURNED TO GJT. DISCOVERED LATCH PIN WAS BROKEN, LEFT SIDE OF RIGHT MAIN GEAR DOOR. FOUND AFT LATCH SAFETY PIN CAME OUT. RESAFETIED AND LATCHED DOOR. OPS CHECK GOOD. REINSPECTED BY SLC CHECKS GOOD.