RAIM Check
What's the gen on checking for RAIM using the aircraft's equipment .. is it mandatory even if one gets timely Notam advice about possible outages for specific locations?
If there's a mandatory requirement to get RAIM prediction onboard (in flight or pre-departure) even though one has a clear Notam in the hand, where is this stipulation to be found?
From what i've read, Notam advice regarding RAIM availability is possibly a superior source of the info' than what the onboard machine might say(?!).