Please, How on earth can you compare 332-Certified Engines, to a miserly 70-Non-C/4 Engines!
Maybe we can have a fair representation of engine specific performance issues, based equal numbers of engines for the group(s), not shown in the Original Message. This smacks of Rotax advertisement. Lets take a look at an equal data pool provided by Certified vs. Non-C/4 engines, shall we. Based on the numbers provided, if one extrapolated to equal quantities of (Cert engs vs Non-C/4 engs) engines: ENGINE ACC PCT LOP LOP% ------------------------------------------------------------------ Certified 332 51% 57 17% Non-C/4 332 52% 62 19% Beam me up, Larry A Capps Naperville, IL "Despite the cost of living, have you noticed how popular it remains" -----Original Message----- Here is an email that I received on another group. Might help you guys in this debate. The Results: ENGINE ACC PCT LOP LOP% ------ --- --- --- ---- Certified 332 51% 57 17% Auto 95 15% 27 28% Non-C/4 70 11% 13 19% Two-Strokes 134 21% 46 34% Of primary interest here, I think is the percentage of accidents where a loss of engine power occured...17% for certified-engine-powered planes, vs. 28% for auto-engine conversions. It's interesting to note the non-certified four strokes are doing practically as well as the certified engines. The Rotax 912/914 series alone does even better... a LOP% value of 13%.