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Allison Engines

T56 family

In production for 44 years as of this writing, the T56 is most often seen on large military turboprop aircraft. T56

T56

Engine statistics
Specification	-A-14	-A-427
Application	P-3C Orion	E-2C Hawkeye
T/O Power	4591 shp	5250
T/O SFC	0.54	0.47
Cruise Power
Cruise SFC
Max pwr. pressure ratio	9.6	12
Length (in)	146.3	146.1
Dia (in)	49	48.3
Weight	1890 lb	1940