As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE FROM PDX TO TOL, AFTER T.O. THE GEAR DOOR WARNING LIGHT ILLUMINATED WITH THE GEAR RETRACTED. THE FLIGHT CREW CYCLED GEAR WITH THE DOOR WARNING INDICATION REMAINING THE SAME. THE FLIGHT RETURNED TO PDX FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE LANDING GEAR DOORS AND INDICATION SYSTEMS WITH THE DEFECTS NOTED. MAINTENANCE LUBRICATED THE DOOR UPLATCHES AND PERFORMED A SUCCESFUL OPERATIONAL CHEKCK. THE AIRCRAFT WAS RETURNED TO SERVICE.