912 number designations
in General Tech Discussion
12 years ago
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
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
Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell
