What was found
PRIOR TO TAKEOFF (T/O INHIBIT) GUST LOCK LIGHT ILLUMINATED. LIGHT ALSO CAME ON WHEN GUST LOCK IS DIS-ENGAGED. INSPECTED GUST LOCK AND INDICATION SYSTEM FOUND DISCREPANCY TO BE INDICATION. MX PERFORMED GUST LOCK DIS-ENGAGED AND DEACTIVATED IN THAT POSITION, CONNECTOR DISCONNECTED AND CB COLLARED. VISUALLY VERIFIED GUST LOCK DIS-ENGAGED AND DE-ACTIVATED. FOUND RUDDER GUST LOCK WARNING SWITCH BAD. REMOVED AND REPLACED THE WARNING SWITCH IAW SWM 27-70-00. OPS CK GOOD P/N MS253448-1.