关键词: |
AIR TRAFFIC CONTROL SYSTEMS, COLLISION AVOIDANCE, COMMERCE, COMMUNITIES, PILOTS, AERONAUTICS, FLEETS(SHIPS), AVIATION SAFETY, ALTITUDE, AIR TRAFFIC CONTROLLERS, CONFIDENCE LEVEL, MARGIN OF SAFETY, WARNING SYSTEMS. |
摘要: |
TCAS is now installed in a substantial portion of the U.S. commercial fleet, and both the Airline Pilots Association and FAA believe that the system adds a margin of safety to alr travel. However, problems that have emerged prevent the system from reaching its full potential. The aviation community is nearly unanimous in recognizing that TCAS needs to be Improved because it issues too many unnecessary alerts, causes excessive altitude deviations (over 1,000 feet), and causes pilots to miss landing approaches. Pilots and alr traffic controllers stated that these problems reduce users' confidence in TCAS and the margin of safety that the system provides. |