What was found
YLW - AFTER LIFTOFF RIGHT FORWARD EMERGENCY EXIT SHOWED UNSAFE INDICATION. RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. FOUND THE FWD RT EMERGENCY DOOR PROX SENSOR TARGET SPRING LOADED FOLLOWING SHAFT FROZEN WITH WATER. HEATED AND DRIED WATER FROM FOLLOWING SHAFT. LUBRICATED FOLLOWING SHAFT TO ALLOW TARGET TO FOLLOW SENSOR. NO FURTHER DEFECTS NOTED. OPS CHECK GOOD. RETURNED TO SERVICE. NO PARTS REPLACED.