(unfortunately it's been a while).
I've got a neat little receiver that I use to listen to ATC when visiting airports around Toronto (it's an ICOM IC-R2). When I'm at home I can still hear pilots communicating with Toronto Intl's approach controllers, all the way from when they first check in, untill they're handed off to Toronto's tower. Unfortunately, I can only hear the pilots side of the radio work (I live 12 nm from Toronto Intl), however, it's pretty easy to fill in the blanks about what the controllers are requesting, etc.
Over the past few days I've heard a couple of pilots ask for additional information that they were not recieving on their TCAS.
The first pilot stated to the approach controller that his TCAS was showing an "amber target" and asked the controller if he could let him know what altitude the other aircraft was at?
The second piloted stated to the approach controller that he had a TCAS target and wanted to know if the other aircraft was below him or beside him?
My question is...Does a TCAS not show the altitude of other aircraft that are flying close by? Or could it be that these particular airliner's TCAS's were not functioning properly?
I've read articles in the past about TCAS, but I've forgoten what all their capabilities are. I also did a search, but the posted info (which was great) didn't answer my question....unless I missed it.