What was found
ON GEAR RETRACTION, THE RED LIGHT IN THE GEAR HANDLE REMAINED ILLUMINATED. SOME UNUSUAL TURBULENCE WAS FELT DURING THE FLIGHT BUT DID NOT SEEM TO BE COMING FROM THE NOSE GEAR DOOR. WHEN THE GEAR WAS SELECTED DOWN WE NOTICED A NORMAL GEAR EXTENSION WITH 3 GREEN LIGHTS AND RED HANDLE LIGHT EXTINGUISHED. CHECKED RESISTANCE ON THE UPLOCK SWITCHES & FOUND LT & RT UPLOCK SWITCHES BAD. REMOVED LT & RT SWITCH & REPLACED WITH NEW MAIN GEAR UPLOCK SWITCHES. ADJUSTED SWITCHES & PERFORMED LANDING GEAR POSITION & WARNING SYS OPS CHECK WITH SATISFACTORY RESULTS. ALL WORK PERFORMED IAW MM 32-00-00 & WDM 32-31-02. GEAR SWING CHECKS GOOD.