Your right my head was on the On Approach phase not the decent, I should have said when you are in the 'on approach' phase its impossible to be below the profile with VNAV SPD
You are correct that if your below the path and 'on approach' engaging VNAV will give you VNAV PTH (not VNAV ALT) and it will level of until intercepting the path
Last edited by felixthecat; 28th May 2016 at 22:07.