What was found
WHEN PERFORMING AND AFTER PHASE INSPECTION CHECK FLIGHT, FOLLOWING TAKEOFF AND LANDING GEAR RETRACTION THE RED IN-TRANSIT LIGHT IN THE GEAR HANDLE WOULD REMAIN ILLUMINATED. THE AIRCRAFT RETURNED AND WAS PLACED ON JACKS. REPEATED LANDING GEAR CYCLES WERE NORMAL AND THE ISSUE COULD NOT BE GROUND DUPLICATED. ANOTHER CHECK FLIGHT WAS ACCOMPLISHED WITH THE RED LIGHT REMAINING AFTER RETRACTION. THE AIRCRAFT WAS AGAIN JACKED AND AGAIN, ALL CYCLES WERE NORMAL. UPLOCK SWITCH RIGGING WAS CHECKED AND FOUND NORMAL. AIRLOADS WERE SIMULATED ON THE GEAR AND ALL HANGAR RETRACTIONS WERE NORMAL. ANOTHER CHECK FLIGHT WAS ACCOMPLISHED WITH THE RED LIGHT REMAINING AFTER RETRACTION. THE AIRCRAFT WAS AGAIN JACKED AND THE GEAR CYCLED, AND OPERATION AND INDICATIONS WERE NORMAL. THE LANDING GEAR MOTOR WAS REPLACED AND THE LANDING GEAR WAS OPERATIONALLY CHECKED AND FOUND NORMAL. LANDING GEAR OPERATION AND INDICATIONS WERE NORMAL ON THE SUBSEQUENT CHECK FLIGHT, AND HAS BEEN NORMAL SINCE THAT REPLACEMENT.