Roger Lee Posted December 22, 2011 Report Share Posted December 22, 2011 Don't let the letter after the 912 throw you when looking at Rotax SB's. Just stick with the serial for your engine model. Once you understand how Rotax writes these bulletins they are easy to read. The engine is available in the following versions: 912 A# - Certified to JAR 22, 80 hp (60 kW) 912 F# - Certified to FAR 33, 80 hp (60 kW) 912 S# - Certified to FAR 33, 100 hp (75 kW) 912 UL# - Uncertified, 80 hp (60 kW) 912 ULS# - Uncertified, 100 hp (75 kW) 912 ULSFR# - Uncertified French Authority specification. 100 hp (75 kW) The # in the designation stands for: Shaft with flange for fixed pitch propeller, P.C.D. 100 mm Shaft with flange for fixed pitch propeller, P.C.D. 75 mm, P.C.D. 80 mm and P.C.D. 4 inches Shaft with flange for constant speed propeller P.C.D. 75 mm, P.C.D. 80 mm, P.C.D. 4 inches and drive for hydraulic governor for constant speed propeller Shaft with flange for constant speed propeller P.C.D. 75 mm, P.C.D. 80 mm, P.C.D. 4 inches and prepared for retrofit of a hydraulic governor for constant speed propeller Link to comment Share on other sites More sharing options...
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