Model	Cheyenne I	Cheyenne IA	Cheyenne II	Cheyenne IIXL	Cheyenne III	Cheyenne IIIA	Cheyenne 400LS
Engines	PT-6A-11	PT-6A-11	PT6A-28	PT-6A-135	PT6A-41	PT6A-61	TPE-331-14
HP	500	500	620	620	720	720	1000
Take Off over 50ft Obstacle	500	500	620	620	720	720	1000
Rte of Climb (FPM)	2,444	2,400	1,980	2,940	2,384	2,280	1,930
Max Speed (KTS)	252	261	283	278	290	305	351
Service Ceiling	28,200	28,200	31,600	32,400	32,000	35,840	41,000
Single Engine Service Ceiling Gross Weight (FT)	13,750	13,750	14,600	14,900	18,200	23,200	28,700
Max Range	1,330	1,330	1,510	1,300	2,240	2,270	2,176
Landing over 50ft Obstacle (FT)	1,663	1,630	1,860	1,773	2,135	2,586	2,038
Max Ramp Gross Weight (LBS)	8,750	8,750	9,050	9,540	11,285	11,285	12,135
Useful Load (LBS)	3,843	3,646	4,074	4,376	4,896	4,448	4,589
Standard # of Seats	7	7	7-8	7-8	9	9	9