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Old 28th Nov 2013, 11:29
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Oakglade
 
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AP/FD off during TCAS RA - A320

Hi there, apologies if this has been posted before.

Can someone explain the reasoning behind AP/FD 'Off' when responding to a TCAS RA on A320 family? AP "Off" I can understand, but FD "Off" is something I'm having difficulty with. FCOM appears devoid of explanation however any references would also be appreciated.

Thanks in advance.
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