As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FL 335, DURING DESCENT THE RED LANDING GEAR LIGHT CYCLED ON AND OFF WITH THROTTLES IN FORWARD POWER RANGE. GEAR HANDLE RAISED HAD NO EFFECT. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RIGHT MLG UPLOCK SENSOR PER MM 32-61-21. SYSTEM OPS CHECKED GOOD. (M)