CFM International CFM56-3C1
35 aircraft on the U.S. register carry a CFM International CFM56-3C1 engine, rated at about 23,515 pounds of thrust. The Boeing 737 is the model most often fitted with it (35 aircraft). The aircraft carrying it were built between 1987 and 1999.
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 CFM56-3C1. FAA spelling: CFM56-3C1.
Where they are owner's state
Michigan9Delaware6Missouri4Florida4Alaska4Virginia3Arizona2Utah1Texas1Hawaii1
Kind of aircraft
Airliners and large jets35 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the CFM International CFM56-3C1 the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 3,006 failure reports with the FAA since 1995, 34 of them in the last ten years.
Failure reports 3,006 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Skin510Frame240Light157Door Frame119Stringer Clip74Slide66Shear Tie64Crease Beam58Floorbeam53Intercostal53
Latest reports
2026-02-02Cabin Pressure: faulted
2025-06-09Wire Harness: pinched
2024-10-17Regulator: inoperative
2024-10-09Engine: no discrepancy
2024-06-25Sensor: failed
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
- Boeing 737 35 with this engine series
Where they are
Biggest operators
- Kalitta Charters II LLC 9 of these aircraft
- Eastern 737 Asset Holdings LLC 4 of these aircraft
- Dynamic Avlease INC 3 of these aircraft
- Aerotrust Services CORP Trustee 3 of these aircraft
Airworthiness
- Failure reports on the CFM International CFM56-3C1 3,006 reports since 1995
Analytics
These connections as data: /graph/engine/cfm-international-cfm56-3c1.json · about the eFlight graph.
Aircraft newest certificates first · 35
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N545CC | Boeing 737-48E |
Fixed-wing, multi-engine | Taas CORP Wilmington, Delaware |
Standard | 2026-03-19 | ValidFAA registration status code V: Valid registration. All codes |
| N440KH | Boeing 737-490 |
Fixed-wing, multi-engine | Aircraft 28889 LLC Lake Mary, Florida |
Standard | 2025-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N468VX | Boeing 737-46J |
Fixed-wing, multi-engine | Aerotrust Services CORP Trustee Wilmington, Delaware |
Standard | 2025-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N263LM | Boeing 737-400 |
Fixed-wing, multi-engine | Vent Airlines INC Dover, Delaware |
Standard | 2025-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N972EX | Boeing 737-505 |
Fixed-wing, multi-engine | Ballair Aviation Holdings LLC Laud By Sea, Florida |
Standard | 2025-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N986PC | Boeing 737-59D |
Fixed-wing, multi-engine | Aerotrust Services CORP Trustee Wilmington, Delaware |
Standard | 2024-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N737MT | Boeing 737-5L9 |
Fixed-wing, multi-engine | Cbmoncrief Operating LLC Fort Worth, Texas |
Standard | 2024-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N149XA | Boeing 737-484 |
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 |
| N313XA | Boeing 737-484 |
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 |
| N314XA | Boeing 737-484 |
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 |
| N803TJ | Boeing 737-400 |
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 |
| N409YK | Boeing 737-436 |
Fixed-wing, multi-engine | Aircraft 25859 LLC Lake Mary, Florida |
Standard | 2024-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N264LM | Boeing 737-4Q3 |
Fixed-wing, multi-engine | Midnight Engineering LLC Fort Lauderdale, Florida |
Standard | 2023-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N406CK | Boeing 737-400 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2022-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N337CK | Boeing 737-3Y0 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2022-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N652EE | Boeing 737-400 |
Fixed-wing, multi-engine | Aerotrust Services CORP Trustee Wilmington, Delaware |
Standard | 2022-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N307GT | Boeing 737-4H6 |
Fixed-wing, multi-engine | Wilmington Trust CO Trustee Wilmington, Delaware |
Standard | 2022-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N403CK | Boeing 737-4Q8 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2021-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N304KH | Boeing 737-3Q8 |
Fixed-wing, multi-engine | Nas Aircraft Leasing CO LLC Anchorage, Alaska |
Experimental | 2021-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N401YK | Boeing 737-436 |
Fixed-wing, multi-engine | Nas Aircraft Leasing Company LLC Anchorage, Alaska |
Standard | 2021-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N735Z | Boeing 737-5YO |
Fixed-wing, multi-engine | Dynamic Avlease INC Bridgewater, Virginia |
Experimental | 2020-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N735T | Boeing 737-505 |
Fixed-wing, multi-engine | Dynamic Avlease INC Bridgewater, Virginia |
Experimental | 2020-12-07 | ValidFAA registration status code V: Valid registration. All codes |
| N735X | Boeing 737-5YO |
Fixed-wing, multi-engine | Dynamic Avlease INC Bridgewater, Virginia |
Restricted | 2020-12-07 | ValidFAA registration status code V: Valid registration. All codes |
| N311GT | Boeing 737-400 |
Fixed-wing, multi-engine | Umb Bank Na Trustee Salt Lake City, Utah |
Standard | 2020-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N405YK | Boeing 737-436 |
Fixed-wing, multi-engine | Nas Aircraft Leasing Company LLC Anchorage, Alaska |
Standard | 2020-07-01 | ValidFAA registration status code V: Valid registration. All codes |
| N301KH | Boeing 737-330 |
Fixed-wing, multi-engine | Aeko Kula LLC DBA Honolulu, Hawaii |
Standard | 2019-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N332CK | Boeing 737-300 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2018-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N405CK | Boeing 737-436 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2018-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N734CK | Boeing 737-436 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2017-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N709S | Boeing 737-500 |
Fixed-wing, multi-engine | Sierra Pacific Airlines INC Tucson, Arizona |
Standard | 2017-06-21 | ValidFAA registration status code V: Valid registration. All codes |
| N733CK | Boeing 737-436 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2017-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N732CK | Boeing 737-405 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2016-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N303KH | Boeing 737-319 |
Fixed-wing, multi-engine | Nas Aircraft Leasing Company LLC Anchorage, Alaska |
Standard | 2015-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N730CK | Boeing 737-4C9 |
Fixed-wing, multi-engine | Kalitta Charters II LLC Ypsilanti, Michigan |
Standard | 2014-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N708S | Boeing 737-528 |
Fixed-wing, multi-engine | Sierra Pacific Airlines INC Tucson, Arizona |
Standard | 2014-08-04 | ValidFAA registration status code V: Valid registration. All codes |
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.