It may be a stupid question, but in what way is an altimeter setting error in a non-LPV RPN approach different from an altimeter setting error in a VOR or NDB approach ?
I probably have a less sophisticated GPS equipment in my small aircraft than a liner's equipment but I don't have any glide slope indication during non-LPV RPN approaches and I have to guard my descent with "gates" as for old fashioned non precision approaches.
Of course, the security brought by these gates is only real if the QNH setting is correct.
22 years ago my instructor trained me to ask, before reaching the FAF on a non precision approach, "LX-xxx, please confirm QNH 1012?" and to systematically set the radio-altimeter alarm to decision height.
Last edited by Luc Lion; 2nd Jun 2023 at 11:37.