On Mar 6, 6:31*am, brian whatcott wrote:
BT wrote:

* /snip/
* "Transport" military aircraft may or may not have TCAS, it depends on
* their vintage, and they do not have an air to air radar to "ping" a
* transponder.
* " Heavy Bomber" military aircraft may not have TCAS, it depends on their
* vintage, and they do not have an air to air radar to "ping" a
transponder.
* /snip/

* BT "retired military aviator" and one time ATC controller.

I know the C-5 has TCAS. It uses squitter mode and interrogates
transponders.
The KC-135 has TCAS. I am almost certain it too interrogates.
* (I should know this, but I did not update the transponder model for
the KC-135 simulators, and cannot recall. Military aircraft are subject
to continuous performance updates.)

Brian W

All USAF C5 an KC-10 have TCAS-II/ETCAS (military variant). I
occasionally get to share airspace with KC-10s out of Travis AFB and
glad they have TCAS-II and I have a transponder (and I'm usually on
flight following with Travis approach if close to Travis).

I believe all KC-135s got TCAS-II/ETCAS in the Pacer/CRAG upgrade
program starting back last decade. Maybe some initially got only TCAS-
I.

C-130s have TCAS. And so on. I think the general assumption today
should be that military transport aircraft have TCAS-II. Outside
tactical exercises I expect those TCAS systems to be operating. When
operating normally all these system will interrogate mode C and S
transponders independent of ground radar or other interrogators.

Darryl