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A320 RAIM

Old 11th Oct 2021, 22:11
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A320 RAIM

Do we need to deselect satellites on the MCDU during preflight?
Are we required to do a RAIM prediction when dispatching to an RNAV approach?

thank you!
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Old 11th Oct 2021, 23:36
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No, and no.
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Old 12th Oct 2021, 00:00
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If you are planning an RNP AR approach then a check is required.In Europe there is a prediction tool. https://augur.eurocontrol.int/status/
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Old 12th Oct 2021, 08:32
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The terminomogy and standards are not unified yet.

​​​​​​For us, there is no such thing as RNAV approach. Only RNP and RNP AR.

And for any RNP procedure (SID / ENR / STAR / APCH) based on GNSS some sort of RAIM check is required.

Makes sense, I guess.

Last edited by FlightDetent; 12th Oct 2021 at 08:56.
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Old 12th Oct 2021, 11:10
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We donít deselect satellites.

For us, RAIM predictions are required when our alternate requires a RNAV (GPS) approach. (Our predictions are included in our flight plan NOTAMs)

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