How do you activate TCAS TEST?I have the 800/900 with all the updates, but on the TCAS switch on the radio panel I can only seem to click left as far as STANDBY and right as far as TA/RA??

Strange... You HAVE to be able to click to the left of Standby, which is Test. When the Test is completed the switch automatically goes back to Standby. This is the only way to get it done, so...

TCAS Test is not allowed in the air - you have to do it while on ground. Best,