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Old 9th October 2010 | 13:10
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Black_Dawn
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Joined: May 2001
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From: Italy
A320 APU Bleed

Hello
Talking about the A320 apu bleed air indication.
On the right corner of the ECAM APU screen you've got the value (in psi) of bleed air: the system FCOM says that an amber "XX" replaces the indication when ADIRS2 is not available or selected off.

Can someone explain to me why it's so?

thanks B_D
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