What was found
VIS - LEFT MAIN LANDING GEAR 'RED' UNSAFE LIGHT REMAINED ILLUMINATED FOLLOWING GEAR EXTENSION. NORMAL POSITION INDICATIONS RECEIVED FOLLOWING SUBSEQUENT GEAR EXTENSION. AIRCRAFT LANDED WITHOUT INCIDENT. AIRCRAFT FERRIED TO FAT FOR REPAIRS. MAINTENANCE REPLACED LEFT MAIN LANDING GEAR DOWN LOCK MICROSWITCH. GEAR POSITION INDICATIONS NORMAL DURING GROUND TEST. AIRCRAFT RETURNED TO SERVICE. (M)