wrote:
If as PNF you notice that the PF has just turned on to the wrong runway
to commence the takeoff roll, are you permitted to alert him (can't see
why not, actually, if lives are likely to be on the line) to it or are
you expected to just shut up and let him make the call? Presume for the
moment that the Capn is PF, which I hear wasn't the case in the LEX
incident...

Ramapriya

I would think that CRM (Cockpit (or Crew) Resource Management)
techniques would suggest yes, you should speak up.

Jay B