Much more complicated than "just follow SOP"
@ Cokebottle. Yes, better following SOP, the FCOM, and FCTM (and common sense) certainly helps. But we've been having jet transport hull losses in similar circumstances, by very experienced pilots trying to do the right thing for the circumstances encountered, since the dawn of the jet age, and before, ...in fact back to the 1930s, with the advent of the first radio nav aids. Accidents like this are now completely unnecessary, as much as an accident due to an R2800 blown jug or shedding an R3350 or Allison 501 prop blade are no longer necessary. That landing would have been entirely routine, with fully using RNP combined with GLS, and use of the autoflight modes already installed and long available to that flight crew. So this failure is a failure of the entire system, ...from authorities, to ANSPs, to airports, to the operator not insisting on cost effective options and solutions when making aircraft purchases, and it is not just for the flight crew to take 100% of the blame. Let's not go another decade now, unnecessarily costing jets and risking crew and passenger lives, with accidents like this one, and CYHZ. There is now a much better way, for equivalent or less cost.