The U.S. aircraft register, updated daily
Engines · turbofan · data as of October 5, 2026

CFM International CFM56 series

709 aircraft on the U.S. register carry a CFM International CFM56 series engine, rated at about 2200 horsepower. The Boeing 737 is the model most often fitted with it (488 aircraft). The aircraft carrying it were built between 1988 and 2018.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as CFM International CFM56 series. FAA spelling: CFM56 SERIES.

Fitted to model families

Boeing 737488Airbus A319113Airbus A32068Airbus A32134Douglas DC-84Boeing 7571Dassault FALCON 20001

Boeing 737 · Airbus A319 · Airbus A320 · Airbus A321 · Douglas DC-8 · Boeing 757 · Dassault FALCON 2000

Where they are owner's state

Texas207Georgia185Illinois131Utah102Washington19Delaware18Missouri9Arizona6Minnesota4Florida4

Kind of aircraft

Airliners and large jets708 (100%)Business jets1 (0.1%)

When the aircraft were built by decade

0112223334446119607198021419904462000322010

What the FAA has certified, ordered and been told about the CFM International CFM56 series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 2,440 failure reports with the FAA since 1995, 738 of them in the last ten years.

Failure reports 2,440 since · what operators and shops told the FAA

0621251882509500051015202511226

Parts most often reported as the reports name them

Engine359Pump62Hmu49Floor Support46Actuator44Frame44Floor Panel40Sensor40Skin39Connector35

Latest reports

2026-09-27Engine: smoke
2026-09-24Engine: fire
2026-09-23Warning Light: false activation
2026-09-22Engine: power loss
2026-09-21Blades: dented

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/cfm-international-cfm56-series.json · about the eFlight graph.

Aircraft newest certificates first · 709

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N671HS Dassault Aviation
FALCON 2000
Fixed-wing, multi-engine Co-owned owner
Tennessee
Standard 2026-09-23 ValidFAA registration status code V: Valid registration. All codes
N7777Q Boeing
737-7BC
Fixed-wing, multi-engine Cobra Aviation Services LLC
Oklahoma City, Oklahoma
Standard 2026-09-17 ValidFAA registration status code V: Valid registration. All codes
N37298 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2026-09-11 ValidFAA registration status code V: Valid registration. All codes
N859AM Boeing
737-800
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2026-06-21 ValidFAA registration status code V: Valid registration. All codes
N39297 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N7824A Boeing
737-7BK
Fixed-wing, multi-engine Unical Aviation INC
Glendale, Arizona
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N478US Boeing
737-7H4
Fixed-wing, multi-engine US Department of Homeland Security
Arlington, Virginia
Standard 2026-03-09 ValidFAA registration status code V: Valid registration. All codes
N7865A Boeing
737-7Q8
Fixed-wing, multi-engine Unical Aviation INC
Glendale, Arizona
Standard 2026-02-11 ValidFAA registration status code V: Valid registration. All codes
N13750 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2026-02-05 ValidFAA registration status code V: Valid registration. All codes
N27724 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2026-02-05 ValidFAA registration status code V: Valid registration. All codes
N782SP Douglas
DC-8-72CF
Fixed-wing, multi-engine Liberty University INC
Lynchburg, Virginia
Standard 2026-02-04 ValidFAA registration status code V: Valid registration. All codes
N670MT Boeing
737-4Q8
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2026-01-23 ValidFAA registration status code V: Valid registration. All codes
N850MT Boeing
737-36E
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2026-01-23 ValidFAA registration status code V: Valid registration. All codes
N422WN Boeing
737-7H4
Fixed-wing, multi-engine Unical Aviation INC
Litchfield Park, Arizona
Standard 2026-01-04 ValidFAA registration status code V: Valid registration. All codes
N976AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2025-11-25 ValidFAA registration status code V: Valid registration. All codes
N969AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N973AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N37293 Boeing
737-824
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N885DN Boeing
737-900ER
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N397SW Boeing
737-3H4
Fixed-wing, multi-engine Dynamic Air Solution LLC
Fort Lauderdale, Florida
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N974AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N712US Airbus Industrie
A319-112
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N105UW Airbus Industrie
A320-214
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N626SW Boeing
737-3H4
Fixed-wing, multi-engine Tvpx Ars INC Trustee
North Salt Lake, Utah
Standard 2025-09-05 ValidFAA registration status code V: Valid registration. All codes
N804DH Douglas
DC-8-73F
Fixed-wing, multi-engine Bjw Services INC
Kingman, Arizona
Standard 2025-07-29 ValidFAA registration status code V: Valid registration. All codes
N888AU Boeing
737-490
Fixed-wing, multi-engine Aircraft 28888 LLC
Lake Mary, Florida
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N377XX Boeing
737-75V
Fixed-wing, multi-engine
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N112US Airbus Industrie
A320-214
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2025-05-16 ValidFAA registration status code V: Valid registration. All codes
N347DN Airbus Sas
A321-213
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2025-04-24 ValidFAA registration status code V: Valid registration. All codes
N883V Boeing
737-75G
Fixed-wing, multi-engine Innovation First Intl Research & Development INC
Greenville, Texas
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N970AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N34282 Boeing
737-824
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N804SY Boeing
737-8Q8
Fixed-wing, multi-engine Sun Country INC
Minneapolis, Minnesota
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N975AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N73275 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-08-14 ValidFAA registration status code V: Valid registration. All codes
N971AN Boeing
737-823
Fixed-wing, multi-engine American Airlines INC
Fort Worth, Texas
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N706SW Boeing
737-7H4
Fixed-wing, multi-engine Jmf Global INC
Anaheim, California
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N37274 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N37273 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N438US Boeing
737-4B7
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N625SW Boeing
737-3H4
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N627SW Boeing
737-3H4
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N629SW Boeing
737-3H4
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N804TJ Boeing
737-401
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N806TJ Boeing
737-490
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N807TJ Boeing
737-4Q8
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N808TJ Boeing
737-4Q8
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N811TJ Boeing
737-306
Fixed-wing, multi-engine Eastern 737 Asset Holdings LLC
Kansas City, Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N37409 Boeing
737-924
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N35271 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N886DN Boeing
737-900ER
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N76269 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-04-11 ValidFAA registration status code V: Valid registration. All codes
N883DN Boeing
737-900ER
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N73270 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N882DN Boeing
737-900ER
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2024-03-29 ValidFAA registration status code V: Valid registration. All codes
N38268 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N37408 Boeing
737-924
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-03-15 ValidFAA registration status code V: Valid registration. All codes
N37267 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-03-06 ValidFAA registration status code V: Valid registration. All codes
N76265 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-02-21 ValidFAA registration status code V: Valid registration. All codes
N491WN Boeing
737-7H4
Fixed-wing, multi-engine Southwest Airlines CO
Dallas, Texas
Standard 2024-02-07 ValidFAA registration status code V: Valid registration. All codes
N37263 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-01-30 ValidFAA registration status code V: Valid registration. All codes
N33262 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2024-01-25 ValidFAA registration status code V: Valid registration. All codes
N32404 Boeing
737-924
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-12-29 ValidFAA registration status code V: Valid registration. All codes
N77261 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-12-29 ValidFAA registration status code V: Valid registration. All codes
N707J Boeing
737-7BC
Fixed-wing, multi-engine Spectre Air Capital LLC
Horseshoe Bay, Texas
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N30401 Boeing
737-924
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N802DH Douglas
DC-8-73
Fixed-wing, multi-engine Heavylift Cargo Airlines INC
Kingman, Arizona
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N803DH Douglas
DC-8-73
Fixed-wing, multi-engine Heavylift Cargo Airlines INC
Kingman, Arizona
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N17730 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-06-16 ValidFAA registration status code V: Valid registration. All codes
N38727 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-06-08 ValidFAA registration status code V: Valid registration. All codes
N39726 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-06-08 ValidFAA registration status code V: Valid registration. All codes
N36247 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-06-02 ValidFAA registration status code V: Valid registration. All codes
N38257 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N73256 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N714US Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N37255 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-04-14 ValidFAA registration status code V: Valid registration. All codes
N73259 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N73251 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-02-23 ValidFAA registration status code V: Valid registration. All codes
N300EK Boeing
737-3H4
Fixed-wing, multi-engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Standard 2023-02-13 ValidFAA registration status code V: Valid registration. All codes
N923TR Boeing
737-524
Fixed-wing, multi-engine Career Aviation CO INC
Wilmington, Delaware
Standard 2023-02-08 ValidFAA registration status code V: Valid registration. All codes
N36207 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-02-01 ValidFAA registration status code V: Valid registration. All codes
N399WN Boeing
737-3H4
Fixed-wing, multi-engine Coulson Aviation (USA) INC
Portland, Oregon
Standard 2023-01-21 ValidFAA registration status code V: Valid registration. All codes
N737CG Boeing
737-3H4
Fixed-wing, multi-engine Coulson Aviation (USA) INC
Portland, Oregon
Standard 2023-01-21 ValidFAA registration status code V: Valid registration. All codes
N27205 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-01-19 ValidFAA registration status code V: Valid registration. All codes
N11206 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2023-01-18 ValidFAA registration status code V: Valid registration. All codes
N285GX Airbus
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-12-21 ValidFAA registration status code V: Valid registration. All codes
N33203 Boeing
737-824
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N966AD Airbus
A321-211
Fixed-wing, multi-engine Bank of Utah Trustee
Salt Lake City, Utah
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N704US Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank N A Trustee
Salt Lake City, Utah
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N715UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N805SY Boeing
737-8Q8
Fixed-wing, multi-engine Sun Country INC
Minneapolis, Minnesota
Standard 2022-09-29 ValidFAA registration status code V: Valid registration. All codes
N723UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N716UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N16713 Boeing
737-724
Fixed-wing, multi-engine United Airlines INC
Chicago, Illinois
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N569TR Boeing
737-3TO
Fixed-wing, multi-engine Career Aviation CO INC
Wilmington, Delaware
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N708UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-09-16 ValidFAA registration status code V: Valid registration. All codes
N709UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N710UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank N A Trustee
Salt Lake City, Utah
Standard 2022-09-09 ValidFAA registration status code V: Valid registration. All codes
N724UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Na Trustee
Salt Lake City, Utah
Standard 2022-09-07 ValidFAA registration status code V: Valid registration. All codes
N701UW Airbus Industrie
A319-112
Fixed-wing, multi-engine Umb Bank Trustee
Salt Lake City, Utah
Standard 2022-09-02 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.