A320 RAIM

[MD83FO]

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!

[vlieger]

No, and no.

[tubby linton]

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/

[FlightDetent]

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.

[CaptainMongo]

We don’t 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)