To verify proper operation of the CAS-67A TCAS II System, a pretest setup, self-test, ground test and ramp test must be performed. The following ground test equipment is required for these tests:

- Portable computer with TPU-67A field diagnostics program
- TCAS Ramp Test Set
- Mode S Transponder Ramp Test Set
- Pitot Static Test Set
- Radio Altimeter Test Set

For more information, refer to the CAS-67A TCAS II System Installation Manual.