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TCAS Traffic Display

 
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K.Haroon
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Joined: 11 Dec 2005
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PostPosted: Sat Mar 08, 2014 11:30 pm    Post subject: TCAS Traffic Display Reply with quote

TCAS Traffic Display

Manoeuvres initiated solely on the information shown on the TCAS traffic display have often degraded flight safety. Unfortunately some flight crew are tempted to make their own traffic assessment based on the TCAS display, and to manoeuvre ahead of ATC instructions. This can be dangerous as the TCAS II traffic display is easy to misinterpret due to various factors like the nature of the TCAS moving reference display, partial traffic picture given by the system and limited accuracy of TCAS bearing information. ICAO standards only include phraseology to report resolution advisories (RAs). Therefore, pilots should not report, "TCAS Contact" or "We have it on TCAS" after traffic information from ATC. Indeed, such a report provides no added value to ATC. Neither should the pilots attempt, to self-separate, or challenge an ATC instruction, based on information derived solely from the TCAS traffic display. It is the controller's responsibility to separate aircraft. However in the event of a conflict of advice between a TCAS RA and an ATC instruction, the TCAS RA should be followed ...
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