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M250 Engine Modules

The modular architecture of the Rolls-Royce 250 and T63 series of engines facilitates ease of maintenance and repair. Established in 1948, Air Services Int’l., LLC (ASI) provides full MRO services for M250 modules. ASI also maintains a large pool of exchange and rental engine modules.


M250 Rolls-Royce (Allison) Engine


M250 Compressor Modules


Engine Series Part No. Nomenclature Application
Series II 6853337 Compressor Assy 250-C20
Series II 6890550 Compressor Assy 250-C20, 250-C20B, 250-C20F, 250-C20J
Series II 6890560 Compressor Assy 250-B17, 250-B17B, 250-B17C, 250-B17D, 250-B17E, 250-C20S, 250-C20W
Series II 6890570 Compressor Assy 250-C20C (T63-A-720)
Series II 23032915 Compressor Assy 250-C20R/1
Series II 23035228 Compressor Assy 250-C20R/1
Series II 23038126 Compressor Assy 250-C20R/1 (RS), 250-C20R/2, 250-C20R/4, 250-C20R
Series II 23050833 Compressor Assy 250-C20R/1 (RS), 250-C20R/2, 250-C20R/4, 250-C20R, 250-C20R/2(SP), 250-C20R(ST)
Series II 23073252 Compressor Assy 250-C20R/1 (RS), 250-C20R/2, 250-C20R/4, 250-C20R, 250-C20R/2(SP), 250-C20R(ST)
Series IV 23005250 Compressor Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23033193 Compressor Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23051609 Compressor Assy 250-C30G
Series IV 23051643 Compressor Assy 250-C30, 250-C30P, 250-C30M, 250-C30S, 250-C30L, 250-C30R
Series IV 23052270 Compressor Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23053310 Compressor Assy 250-C30G
Series IV 23056635 Compressor Assy 250-C30G, 250-C30G/2
Series IV 23063379 Compressor Assy 250-C40B, 250-C47B, 250-C47M
Series IV 23065557 Compressor Assy 250-C30
Series IV 23065593 Compressor Assy 250-C40B, 250-C47B, 250-C47M, 250-C30R/3 (T703-AD-700C)
Series IV M250-10559 Compressor Assy 250-C47B, 250-C47M
M250 Combustor Modules


Engine Series Part No. Nomenclature Application
Series II 6870992 Case Assy, Outer Combustion 250-C20, 250-C20B, 250-C20C (T63-A-720), 250-C20F, 250-C20J, 250-C20S, 250-C20W
Series II 23030889 Case Assy, Outer Combustion 250-C20, 250-C20B, 250-C20C (T63-A-720), 250-C20F, 250-C20J
Series II 23031260 Case Assy, Outer Combustion 250-C20, 250-C20B, 250-C20C (T63-A-720), 250-C20F, 250-C20J, 250-C20S, 250-C20W
Series II 23034114 Case Assy, Outer Combustion 250-C20R, 250-B17F
Series IV 6898906 Case Assy, Outer Combustion 250-C30, 250-C30S
Series IV 6899237 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23009569 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23030910 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23030911 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S, 250-C40, 250-C47B, 250-C47B/8, 250-C47M
Series IV M250-10369 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S, 250-C40, 250-C47B, 250-C47B/8, 250-C47M
Series IV M250-10370 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S, 250-C40, 250-C47B, 250-C47B/8, 250-C47M
Series IV M250-10404 Case Assy, Outer Combustion 250-C30, 250-C30P, 250-C30M, 250-C30S, 250-C40, 250-C47B, 250-C47B/8, 250-C47M
M250 Turbine Modules


Engine Series Part No. Nomenclature Application
Series II 6853329 Turbine Assy 250-C20
Series II 6886443 Turbine Assy 250-C20B
Series II 6887195 Turbine Assy 250-C20
Series II 6898734 Turbine Assy 250-C20
Series II 6898735 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20J
Series II 6899229 Turbine Assy 250-C20F
Series II 23009600 Turbine Assy 250-C20S
Series II 23009713 Turbine Assy 250-C20S, 250-C20W
Series II 23032330 Turbine Assy 250-C20R/1, 250-C20R/1(RS), 250-C20R/4, 250-C20R
Series II 23035211 Turbine Assy 250-C20R/2
Series II 23038160 Turbine Assy 250-C20R/1(RS), 250-C20R/2, 250-C20R/4, 250-C20R, 250-C20R/2(SP), 250-C20R(ST)
Series II 23038241 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20J
Series II 23038244 Turbine Assy 250-C20C (T63-A-720)
Series II 23053298 Turbine Assy 250-C20R/2250-C20R/4250-C20R/2(SP)
Series II 23069707 Turbine Assy 250-C20W
Series II 23069745 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20J
Series II 23072082 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20J, 250-C20W
Series II 23072104 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20W
Series II 23072105 Turbine Assy 250-C20, 250-C20B, 250-C20F, 250-C20W
Series II 23073352 Turbine Assy 250-C20R/1(RS), 250-C20R/2, 250-C20R/4, 250-C20R, 250-C20R/2(SP), 250-C20R(ST)
Series II 23073513 Turbine Assy 250-C20R/1, 250-C20R/1(RS), 250-C20R, 250-C20R(ST)
Series II 23073514 Turbine Assy 250-C20R/1(RS), 250-C20R/2, 250-C20R/4, 250-C20R, 250-C20R/2(SP), 250-C20R(ST)
Series II 23088158 Turbine Assy 250-C20S
Series IV 6898685 Turbine Assy 250-C30M, 250-C30S
Series IV 23004540 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23008490 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23031493 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23031925 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23033195 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23035128 Turbine Assy 250-C30, 250-C30P, 250-C30M, 250-C30S
Series IV 23062032 Turbine Assy 250-C30G/2
Series IV 23063354 Turbine Assy 250-C40, 250-C47B, 250-C47M, 250-C47B/8
Series IV 23066662 Turbine Assy 250-C30
Series IV M250-10557 Turbine Assy 250-C47B, 250-C47M, 250-C47B/8

M250 Gearbox Modules


Engine Series Part No. Nomenclature Application
Series II 6875492 Gearbox Assy, Power & Accessory

250-C20

Series II 6877180 Gearbox Assy, Power & Accessory 250-C20
Series II 6879863 Gearbox Assy, Power & Accessory 250-C20C (T63-A-720)
Series II 6886442 Gearbox Assy, Power & Accessory 250-C20, 250-C20B
Series II 6894171 Gearbox Assy, Power & Accessory 250-C20, 250-C20B
Series II 6898571 Gearbox Assy, Power & Accessory 250-C20
Series II 6899272 Gearbox Assy, Power & Accessory 250-C20F
Series II 23001923 Gearbox Assy, Power & Accessory 250-C20J
Series II 23001938 Gearbox Assy, Power & Accessory 250-C20F
Series II 23004556 Gearbox Assy, Power & Accessory 250-C20B
Series II 23005655 Gearbox Assy, Power & Accessory 250-C30P
Series II 23005656 Gearbox Assy, Power & Accessory 250-C30M
Series II 23005745 Gearbox Assy, Power & Accessory 250-C20J
Series II 23008093 Gearbox Assy, Power & Accessory 250-C20S
Series II 23033382 Gearbox Assy, Power & Accessory 250-B17F, 250-B17F/1, 250-B17F/2
Series II 23035185 Gearbox Assy, Power & Accessory 250-C20R/1, 250-C20R/1(RS), 250-C20R/2, 250-C20R/2(SP)
Series II 23037417 Gearbox Assy, Power & Accessory 250-C20S
Series II 23050834 Gearbox Assy, Power & Accessory 250-B17C(NBV), 250-B17D, 250-B17E, 250-B17C(SM)
Series II 23051632 Gearbox Assy, Power & Accessory 250-C20R/2
Series II

23052352 Gearbox Assy, Power & Accessory 250-C20W
Series II 23053303 Gearbox Assy, Power & Accessory 250-C20R/4
Series II 23060152 Gearbox Assy, Power & Accessory 250-C20R(ST)
Series IV 23008586 Gearbox Assy, Power & Accessory 250-C30, 250-C30S
Series IV 23033178 Gearbox Assy, Power & Accessory 250-C30M
Series IV 23033350 Gearbox Assy, Power & Accessory 250-C20R
Series IV 23035178 Gearbox Assy, Power & Accessory 250-C30P
Series IV 23035179 Gearbox Assy, Power & Accessory 250-C30, 250-C30S
Series IV 23035181 Gearbox Assy, Power & Accessory 250-C30M
Series IV 23039755 Gearbox Assy, Power & Accessory 250-C30P
Series IV 23039782 Gearbox Assy, Power & Accessory 250-C30G

Series IV 23053333 Gearbox Assy, Power & Accessory 250-C30, 250-C30S, C30(HU)
Series IV 23053349 Gearbox Assy, Power & Accessory 250-C30P
Series IV 23053960 Gearbox Assy, Power & Accessory 250-C30G/2
Series IV 23061913 Gearbox Assy, Power & Accessory 250-C30P
Series IV 23063380 Gearbox Assy, Power & Accessory 250-C40B
Series IV 23063393 Gearbox Assy, Power & Accessory 250-C47B, 250-C47B/8
Series IV 23065804 Gearbox Assy, Power & Accessory 250-C30R/3, 250-C30R3/M, T703-AD-700C
Series IV 23066745 Gearbox Assy, Power & Accessory 250-C47M
Series IV 23068220 Gearbox Assy, Power & Accessory 250-C47B, 250-C47B/8
Series IV 23050802

Reduction Gearbox 250-B17F/1, 250-B17F/2, 250-B17E(EST), 250-B17C, 250-B17C(NBV)

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