RNAV approach - level of service VS vertical mode

[acheo]

Hi,

I was always taught not to use VNAV vertical mode when the Level of Service only shows LNAV. I’ m myself a sim instructor on Global 6000 and we teach it this way. I flew the 737 and the Embraer 175....same story.

Now I’m working in the corporate on a Lear 45 and all guys are using VNAV no matter what the LOS is. I would like to show them book references but I can’ find anything with the Lear.

would you have anything to refer me to?

thanks