What was found
(CAN) CREW BEGAN TAXI FROM OUTSTATION&NOTED THAT "GREEN" NOSEGEAR IND. EXTINGUISHED&"RED" UNSAFE IND. ILLUMINATED. A/C SHUTDOWN, PAX DEPLANED&A/C CHOCKED. MAINT FOUND BRACKET THAT PROVIDES DO WN MICRO SWITCH STRIKE PLATE HAD CRACKED ACROSS ATTACHMENT FLANGE&WORKED ITS WAY UP ALLOWING MICROSWITCH TO "UNMAKE" DURING TAXI. GEAR DOWN&LOCKED&ONLY INDICATING UNSAFE CONDITION. A/C FERRIED TO MAIN FACILITY FOR BRACKET REPL&GEAR SWINGS. A/C RT-SRV. DUE TO LOCATION OF CRACK, IT IS VERY DIFFICULT TO FIND AS HEADS OF ATTACH BOLTS&WASHERS OBSCURE CRACK BY APPROX 70%&ADDITIONAL LOCKWIRING A LSO HIDES DEFECT. ALL CO A/C HAVE BE