Phil, I think the question "define a typical KR2" must be asked, and then somebody goes and tests it on a "standard" day.
Wikipedia has this to say about the definition of "service ceiling": The service ceiling is the maximum usable altitude of an aircraft. Specifically, it is the density altitude at which flying in a clean configuration, at the best rate of climb airspeed for that altitude and with all engines operating and producing maximum continuous power, will produce a given rate of climb (a typical value might be 100 feet per minute climb or 30 metres per minute, or on the order of 500 feet per minute climb for jet aircraft). Margin to stall at service ceiling is 1.5g. Lots of room for interpretation there. I'm sure somebody can cite an official definition, so all that remains is that the typical KR2 in question be defined, and a test flight be done under the proper conditions ascertain the number. Going back to work on N891JF... Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------
