Can only speak for the CL-605, the QRH has a very extensive tabular data section covering all the requirements. Isn't that what you are trying to do? The QRH is required to be onboard, anyway. Secondly, the data, when loaded in the FMS, is approved for use as primary. I'm not seeing the need to do all this number crunching.
Second, there are several providers of runway analysis that will set up a mobile phone app to provide "on the spot" data for just about anywhere in the world and custom data for when you are some place really of the grid in a few hours.
GF
Last edited by galaxy flyer; 13th Feb 2012 at 05:35.