Gday all,
I regularly am not picked up by TCAS by both the dash and 146. Not sure what types they have, and would have to check the books to see how they work, but this would happen maybe a third of the time.
Now again, I dont use one, but I just expected that they were used as a secondary means of identification. However, instead of looking out the window I keep getting asked in a derogitory manner "Have you got your transponder turned on" to which I reply "YES, I am visual with you, in your two o'clock level about three miles blah blah".
Anyway, they dont appear to be the be-all end-all.
Cheers
Nb20