VASIS intepretation
Had a discussion with a former heavy jet transport pilot the other day (we're now flying turboprop together) and he mentioned that we should fly a "3 red/1 white" approach to the VASIS to be on glideslope. The "2 white/2 red onslope" indication is meant for big jets due to a different sight picture from a much higher cockpit seating arrangement.
I haven't seen this written anywhere so could somebody point me in the right direction, pls.