ircraft and 7 miles behind the aircraft. The main advantage that TCAS II has over TCAS I is its ability to calculate resolution advisories (Kraus 175). TCAS uses both auditory and visual information to announce traffic. Traffic advisories are given audibly just as a warning for pilots. They would still need to look down at the display to see where the traffic is located. Advantages and Disadvantages of TCASThe main advantage of using TCAS on all aircraft would be that many aircraft already have transponders. The other advantage is that many commercial transports are already equipped with TCAS I or II.With the requirement for transport aircraft to have TCAS installed we have discovered some disadvantages. One of the main disadvantages is that it issues too many unnecessary alerts causing altitude deviations and causing pilots to execute unnecessary missed approaches. Deviations may cause pilots to enter another controller's airspace causing an increase in controller workload, which reduces system efficiency when it is at its peak. The unnecessary altitude deviations cause for unnecessary communications between pilot and controller (USGAO 1).In conclusion, I believe that ADS-B and TCAS are both very beneficial in collision avoidance. Both systems allow the pilots to see and avoid other aircraft. If the FAA were to require all aircraft to be equipped with a collision avoidance technology, I think that the best answer would definitely be ADS-B. Not only does it offer the collision avoidance information, it also serves as a traffic separation tool for ATC on the ground and in the air. ADS-B will bring us one step closer to more efficiently managing our airspace through the implementation of free flight. It could allow for reduced traffic separation in the terminal areas and could move the responsibility of separation from the controller to the pilot in areas of little or no radar coverage....
