Helicopter Turbine Engine Services.

MRO Services | Parts | Exchanges | Rentals

Contact Us!

M250 Repair & Overhaul

Air Services Int’l., LLC (ASI) has specialized in providing rotor-wing services for over 50 years. With decades of experience in M250 support, ASI is a one stop shop for Rolls-Royce M250 series engine services.


M250 Rolls-Royce (Allison) Engine


Series I (250-C18, T63-A-5A, T63-A-700, 250-B15)

First certified on December 19, 1962, the 250-C18 & T63 series of turboshaft helicopter engines are still in service today, 50 years after their introduction. More than 6,400 250-C18, T63-A-5 and T63-A-700 engines were produced. The dash B15, a turboprop version, based on the 250-C18, was certified on March 27, 1969. Fewer than 100 of this B15 series were produced.


Applications
Model Type Engine Part No. Shaft H.P. Year Intro Application
250-B15A Turboprop 6851931 317 1969 Augusta (Siai Marchetti) SM 1019
250-B15G Turboprop 6853221 317 1969 Augusta (Siai Marchetti) SM 1019
T63-A-5A Turboshaft 6852500 250 1962 Bell Helicopter OH-58A “Kiowa”
T63-A-700 Turboshaft 317 1965

Bell Helicopter OH-58A “Kiowa” | MD Helicopters (Hughes) OH-6 “Cayuse”

250-C18 Turboshaft 6854101 317 1962

Bell Helicopter 206A “JetRanger”, TH-57A “Sea Ranger”| Fairchild Hiller FH-1100 | MD Helicopters (Hughes 369) MD 500, 500C

250-C18A Turboshaft 6855321 317 1962 MD Helicopters (Hughes 369) MD 500, 500C
250-C18B Turboshaft 6856991 317 1965 Bell Helicopter 206A “JetRanger”
250-C18C Turboshaft 6857301 317 1965 MD Helicopters (Hughes 369) MD 500, 500C

Series II (250-C20, 250-C20R, T63-A-720, 250-B17, 250-C20S)

The 250-C20 turboshaft engine was certified November 15, 1968. One of the most widely used light turbine helicopter powerplants, over 16,000 (250-C20, 250-C20R and T63-A-720) engines have been produced. A turboprop version of the Series II, 250-B17 turboprop engine was first certified on April 7, 1971. Over 1,300 250-B17 engines were produced and many are still in service today.


Applications
Model Type Engine Part No. Shaft H.P. Year Intro Application
250-B17 Turboprop 6853331 400 1971 Boeing (ASTA/GAF) Nomad N22 | Cessna (American Jet Industries) 402 Turbo Star, 414 Turbo Star Pressurized
250-B17B Turboprop 6889388 400 1974 Agusta (SIAI Marchetti) SM1019 | Boeing (ASTA/GAF) Nomad N22 | Cessna (American Jet Industries) 402 Turbo Star, 414 Turbo Star Pressurized
250-B17C Turboprop

6899291

23051124

6899291

23038150

420 1979 Beech (Tradewind Turbines) A36 | Boeing (ASTA/GAF) N22, N24 “Nomad” | Britten-Norman BN-2T “Turbine Islander” | Cessna (American Jet Industries) 402 “Turbo Star”, 414 “Turbo Star Pressurized” | Enaer T-35DT “Pillan” | FFA AS-202 32T “Bravo” | Loral GZ-22 | Maule Air M-7-250 “Starcraft”, M-7-420 “Starcraft Turboprop” | Vulcanair (Partenavia) AP.68TP “Spartacus”
250-B17D Turboprop

23005700

23051125

420 1983 Aermacchi (Valmet) M-290 TP , L-90 TP “RediGO” | Fuji Heavy Industries T-5, KM-2D | Hindustan Aeronautics HTT-34 “Deepak” | Pacific Aerospace Corp. CT/4C “Airtrainier’ | Siai Marchetti SF.260TP | Thai Air Force RTAF-5
250-B17E Turboprop 23031861 420 1985 Boeing (ASTA/GAF) N22, N24 “Nomad”

250-B17F Turboprop 23033380 450 1988 Aermacchi (Valmet) M-290 TP , L-90 TP “RediGO” | Beech (Allison) T-34C, AT-34 | Extra Aircraft EA-500 | Grob G 120TP
250-B17F/1 Turboprop 23050800 450 1988 Britten-Norman BN-2T “Turbine Islander” | Britten-Norman 4000 “Defender”
250-B17F/2 Turboprop 23050805 450 1988 Beech (Tradewind Turbines) A36 | Cessna (O & N Aircraft) P210N, T210 “Silver Eagle” | Composite Turbine Tech Glasair III | Schweizer RU-38B “Twin Condor”
250-C20S Turboprop 23008092 420 1983 Cessna (Soloy) 185, 206, 207
250-C20 Turboshaft 23033373 400 1968 AgustaWestland AW109, AW109A | Airbus (MBB) Bo-105c | Bell Helicopter 206B “JetRanger” | MD Helicopters (Hughes 369) MD 500C
250-C20B Turboshaft

23004550

6887190

6893660

420 1974 AgustaWestland AW109A, AW109A MKII | Airbus (MBB) Bo-105CBS | Bell Helicopter 206B-3 “JetRanger”  , 206L “LongRanger”, TH-57B “SeaRanger”, (Soloy) 47, 47G | Hiller (Rogerson) RH-1100 | Hiller (Soloy) UH-12 | MD Helicopters (Hughes 369) MD 500D, 500E | PZL Kania “Kitty Hawk” | RFB FT-400 “Fan Trainer”

250-C20C

T63-A-720

Turboshaft 6887191 420 1976 Bell Helicopter OH-58A+, OH-58C “Kiowa” | MD Helicopters (Hughes) OH-6B “Cayuse”

250-C20F Turboshaft 6899271 420 1979 Airbus (Aerospatiale) AS355E “TwinStar”, AS355F “Twin Squirrel”
250-C20J Turboshaft 6899400 420 1981 Bell Helicopter 206B-III “JetRanger”, 206L “LongRanger”, TH-57B, TH-57C “SeaRanger”, TH-67 “Creek”
250-C20R Turboshaft 23033373 450 1989 Airbus (Aerospatiale) AS355E “TwinStar”, AS355F “Twin Squirrel” | Bell Helicopter 206LT “TwinRanger”, (Tridair) 206L Gemini ST
250-C20R/1 Turboshaft 23038200 450 1986 AgustaWestland AW109A, A109A MK.II “Plus”, AW109C, A109C MAX

250-C20R/2 Turboshaft

23035212

23053265

450 1987 Bell Helicopter 206B-III “JetRanger”, 206L “LongRanger” | MD Helicopters (Hughes 369) MD 500D, 500E, MD 520N | PZL SW-4 “Puszczyk”
250-C20R/4 Turboshaft 23053301 450 1989 Bell Helicopter 206B-III “JetRanger”, 206L-1 “LongRanger”
250-C20W Turboshaft 23052351 420 1990 Enstrom TH-28, 480A, 480B | Northrop Grumman RQ-8A “Fire Scout”, MQ-8B “Fire Scout”


Series III (250-C28)

The 250-C28 turboshaft helicopter engine was certified in May 1976. Only 800 some engines in the C28 series were produced, primarily for the Bell 206L-1 LongRanger.


Applications
Model Type Engine Part No. Shaft H.P. Year Intro Application
250-C28B Turboshaft 6895000 500 1976 Bell Helicopter 206L-1 “LongRanger”
250-C28C Turboshaft

6896000

23001830

500 1976 Airbus (MBB) Bo-105LS

Series IV(250-C30, 250-C40, 250-C47, T703-AD-700)

Turboshaft Engine (250-C40, T703-AD-700)

Initially certified on March 28, 1978 the 250-C30 and T703 series of light turbine helicopter engines have been extremely successful. Over 3,500 engines have been produced to date with more than 23 million flight hours logged in the fleet.


FADEC Turboshaft Engine (250-C40, 250-C47, 250-C30R/3, T703-AD-700C)

Certified on February 22, 1996, 250-C40 and 250-C47 series engines are installed with a FADEC (full authority digital engine) system. Since their introduction more than 1,700 engines have been produced. The C40 and C47 fleet has accumulated over 8 million hours of flight time.

VIP Kit Introduced in 2011, the VIP kit offers 250-C47 operators a 5% improvement in C47 engine performance for hot/high environments. Fuel efficiency is also improved, reducing fuel burn by 2%. consist of: (1) New engine impeller, (2)New diffuser vane, and (3) Optimized first stage turbine nozzle. Note: No additional weight is added to the engine with this kit


Applications
Model Type Engine Part No. Shaft H.P. Year Intro Application
250-C30 Turboshaft

6890000

23062052

650 1978 Cessna (Soloy) 337 “Skymaster” | MD Helicopters MD 530F | Sikorsky S76A | RFB FT-600 “Fan Trainer”
250-C30G Turboshaft 23039781 650 1989 Bell Helicopter 222
250-C30G/2 Turboshaft 23053999 650 1992 Bell Helicopter 230
250-C30L Turboshaft Bell Helicopter 406CS, MH-58D “Combat Scout”
250-C30M Turboshaft 23005219 650 1983 Airbus (Europcopter) AS350D AllStar STC
250-C30P Turboshaft 23004545 650 1981 Bell Helicopter  206L-I Air Services Int STC, 206L-III “LongRanger”, 206L-IV “LongRanger”

250-C30R

T703-AD-700

Turboshaft 23055439 650 1981 Bell Helicopter OH-58D “Kiowa Warrior”
250-C30R/1 Turboshaft 23034148 450 1986 AgustaWestland AW109 All+ Italian Military
250-C30S Turboshaft 23005290 650 1982 Sikorsky S76A MKII
250-C30U Turboshaft 23051054 650 1989 Bell 406CS “Combat Scout”

250-C30R/3

T703-AD-700C

Turboshaft

23065550

23056117

650 1997 Bell OH-58D “Kiowa Warrior”
250-C30R/3M Turboshaft 23069722 650 2001 Boeing AH-6 “Little Bird” | MD Helicopters MH-6 “Little Bird”
250-C40B Turboshaft 23063378 715 1996 Bell Helicopter 430
250-C47B 23063392 650 1996 Bell Helicopter 407
250-C47M Turboshaft 23064560 650 1997 MD Helicopters MD 600N
250-C47E Turboshaft 700 2013 MD Helicopters MD 540F

Social Feed