What was found
THE AIRCRAFT HAD A HISTORY OF THE NOSE GEAR RED UNSAFE LIGHT ILLUMINATING IN FLIGHT. MAINTENANCE REMOVED AND REPLACED THE NOSE GEAR LOCK SWITCH IAW MM 32-61-41. THE NOSE GEAR DOWN SENSOR WAS REPLACED IAW MM 32-61-51. IN ADDITION, THE LANDING GEAR LOGIC CARDFILE UNIT WAS REPLACED AND TESTED IAW MM 32-09-20, PAGES 401-424. ALL CHECKS WERE NORMAL. THE AIRCRAFT HAS FLOWN FIVE FLIGHTS WITHOUT REPEAT OF THE PROBLEM SINCE THIS CORRECTIVE ACTION WAS IMPLEMENTED.