MUTT,
RE : "Self imposed company limit" - You're dead right of course, it IS a legal limit to achieve at least the mimimum MAP gradient. A bad choice of words on my part, both of the regulatory authorities that I answer to require that "Provision shall be made to ensure that the missed approach procedure employed shall be such as to ensure obstacle clearance with an engine inoperative during the missed approach" (Not the exact words, but a meld of the words of the 2 authorities). In both cases my predecessors nominated increase of the MDA to comply with the requirement. This was, in both cases, acceptable to the authority. I considered it very messy, the pilot does not have the facility to trigonometrically find the increase in MDA resultant fron Approach Gradient, 0.4% Delta between 2.1% and 2.5%, and Delta altitude between MDA and acceleration altitude.
Instead, as I mentioned, I discarded the 2.1% Approach Climb data, and inserted 2.5% data instead as the standard. For gradients >2.5%, tabular data is available for MLW in the environmental conditions to achieve the higher gradient.
The added bonus is that whereas very few pilots used the old 'increased MDA' method, I regularly see pilots now using the data as described.
"Nominated Technique" would have been a better choice of words than "Self Imposed".
Regards,
Smokey