What was found
(CAN) UNSAFE GEAR INDICATION, GEAR HORN SOUNDING WHILE 3 GREEN INDICATING AND RED LIGHT OUT IN GEAR HANDLE ON GO AROUND. LEFT GEAR DID NOT INDICATE RETRACTIION. TROUBLESHOOTING PROVED THAT THE SWITCH, PN MS21321-2, WAS NOT OPERATING PROPERLY. FAILED TO SHOW GEAR UP WHEN GEAR WAS UP. REPLACED WITH NEW SWITCH FROM SAME SUPPLIER AND IT ALSO FAILED OPS TEST AT INSTALL. SECOND SDR 20130729019. THIRD SWITCH FROM DIFFERENT MFG INSTALLED AND IS WORKING PROPERLY.