PRNAV
Ryanair is PRNAV approved, meaning RNAV SID's and STARS can be flown in LNAV, subject to ANP+raw data back-up. Some of our aircrafts have two FMCs and some have one. There seem to be a general acceptance to fly PRNAV procedures, regardless of having a single FMC. However, I've heard of certain check captains failing crew for the above reason.
Personally, I follow procedures and do what I'm told to..But I do feel comfortable with following the magenta-line, 'cause that's what you do in the cruise anyway. Dual or single FMC. If you lose your FMC...ask for vectors. Right??
Is the PRNAV approval subject to being equipped with dual FMC?
Secondly, what is SOP in other companies?
All opinions on the matter, much appreciated.