Hi Pitbull,
No I did not notice the actual RNP value as I head to enter the hold manual and had been planning on the FMS doing it.
But yeah there was no unable RNP message on the scratch pad or the message on the PFD directing me to the scratch pad.
I have seen the unable RNP message on this aircraft on a previous flight so I know it is functioning.
But yes it was very odd! The display was jumping back and forth at a very high rate of knots!
Had this been a dark and stormy night when all the EGPWS warnings went off would if resulted in a go-around and the potential for confusion without a doubt.
I'm flying the same aircraft tomorrow so I will see how it is acting.
PT6A