Once below a certain agl altitude the TCAS will not give and RA but only
a TA.

Roy Smith wrote:
I asked:

Do TCAS RA's take terrain into account?


Newps wrote:

Yes, the airplane knows how high it is. It will not drive it self into
the ground.


Bob Noel wrote:

TCAS units do not contain terrain databases.


I'm having a hard time making these two responses jive :-)