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Old 6th December 2018 | 19:53
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Feather44
 
Joined: Feb 2015
Posts: 103
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From: Middle East
Do the ADR3 or IR3 give Inputs to the STBY ISIS?

No, the ISIS is fed by Stby probes only.
However, ADR3 receives input from stby probes.

In a nutshell, ADR3 readings on PFD's & ND's are visible only when switching AIR DATA to CAP/FO 3
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