As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WITH GEAR HANDLE UP, THE RIGHT GEAR RED UNSAFE LIGHT ILLUMINATED. RECYCLED THE GEAR WITH NO CHANGE. THE GEAR UPLATCH CHECK ALSO FAILED. ADJUSTED THE TENSION ON THE RIGHT MAIN GEAR DOOR ROLLER BRACKET AND SPRING ASSEMBLY IAW DC-9 MM 32-31-04-2-0103. ALSO CHECKED AND RIGGED THE RIGHT LANDING GEAR DOOR LATCH TORQUE TUBE IAW DC-9 MM 32-31-04-2-1003. CYCLED THE GEAR THREE TIMES. OPS CHECKED GOOD.