A320 APU SD Page Explained | A320 APU

Today, we're diving into the System Display ECAM page for the APU.
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[@heated_kernels]

hey! really loving the detrailed explination on the a320. one question though, why does the bleed pressure indication display XX when ADIRS 1 / 2 is not available?

[@A320Knowledge]

Glad to hear! In order to determine an accurate APU bleed pressure, the ambient air pressure must be determined, and that is taken from the ADIRS via the pitot-static probes