MDA +50FT
Just a thought, although it could be moot if TOGA thrust was not applied in a GA.
Doesn't the Boeing FCTM "recommend" adding 50ft to all MDAs to allow for undershoot in the GA?
This would then make the MDA 520ft and not the charted 470ft, with the MCP set for the nearest '00 feet (should be 600ft but who knows until the DFDR/CVRs are analysed.