Yogibaboo, you have stated in another post that the shortest runway you have landed a CJ1 on was 2953 feet, obviously this was acceptable as per the AFM, but to me it sounds as if you are using the availability of the thrust reversers to provide your fudge factor. But what happens if your air/ground sensor fail and you cant use the thrust reversers?
Mutt, I guess you agree that:
a) the CJ1 has no thrust reversers, just attenuators They have a marginal effect on aborted takeoff (5%)
b) Jet landing performance charts are always excluding T/Rs or in case of the CJ1 the attenuators (there might be additional charts with T/Rs, but for certification they are not required nor used in planning)