What was found
DURING LEVEL FLIGHT AT 10,000 FEET, AND SPEED OF APPROXIMATELY 180 KIAS, THE "CONTROL LOCK ON" CAS MESSAGE ILLUMINATED ON THE PFD'S. THE CONTROL LOCK LEVER WAS CHECKED TO BE IN THE UNLOCKED DETENT . AFTER MOVING THE LEVER SLIGHTLY, AND FIRMLY RETURNING IT TO THE UNLOCKED POSITION, THE CAS MESSAGE EXTINGUISHED. SUB: INSPECTED CONTROL LOCK SYSTEM AND PERFORMED CONTROL LOCK SYSTEM FUNCTIONAL TEST. NO DEFECTS NOTED AT THIS TIME. WORK DONE IN REF TO MODEL 680A MAINTENANCE MANUAL CHAPTER 27-70-00-5