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Old 22nd Nov 2008, 23:41
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TheCosmicFrog
 
Join Date: Apr 2008
Location: Galway, Ireland
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TCAS vs. ATC: who takes priority?

Hey again, still feeling inquisitive

I'm sure that there's probably one definite answer for this in the ol' Pilot's textbook, but I was just curious about it:

When it comes to traffic avoidance, who takes priority, ATC or TCAS?

If ATC says, "Callsign 1234, alert, traffic, cease ascent!"

...and the TCAS says, "Traffic, traffic, climb!"

...what must the PF do? I imagine this must be incredibly disorienting. I know I wouldn't like to be the PF in one of these situations!

Thanking you for any insight
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