No. ATCS is data. It's not likely that you will find it on the AAR voice channels (160-161 MHz).
As stated in Mike Sullivan's post, ATCS is moving to new 800-900 MHz frequencies. It's also possible that the CTC functions that were monitorable over ATCS are moving onto the PTC network which is not monitorable at this time. Or, the CTC functions have already moved to the company's IP network (satellite, fiber optic, etc.).
All indications are that ATCS is going to become a dead-end.