CFM International CFM56-7B27/B3
23 aircraft on the U.S. register carry a CFM International CFM56-7B27/B3 engine, rated at about 27,300 pounds of thrust. The Boeing 737 is the model most often fitted with it (23 aircraft). The aircraft carrying it were built between 1999 and 2010.
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 CFM56-7B27/B3. FAA spelling: CFM56-7B27/B3.
Where they are owner's state
Washington8Utah6Montana3Illinois3Delaware2Florida1
Kind of aircraft
Airliners and large jets23 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the CFM International CFM56-7B27/B3 the component layer
The design is held under 2 type certificates. The FAA has issued 24 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 363 failure reports with the FAA since 1995, 214 of them in the last ten years.
FAA orders 24 airworthiness directives · newest first
2023-05-102023-05-05 · Turbine Engine Compressor Section · engine
2022-03-222022-02-03 · Turbine Engine Accessory Drive · engine
2021-09-282021-16-08 · Turbine Section · engine
2021-06-242021-10-09 · Turbine Engine Compressor Section · engine
2019-07-052019-12-05 · Turbine Section · engine
2019-01-102018-26-01 · Turbine Engine Compressor Section · engine
Failure reports 363 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Actuator21Engine21Blade18Probe17Eec14Seal14Shim14Wire Harness12Warning Message11Connector9
Latest reports
2026-01-18Anti-Ice Valve: faulted
2023-01-19Packing: leaking
2023-01-09Hmu: inoperative
2023-01-02Spacer: debonded
2022-11-29Bleed Valve: faulty
Certificates and bulletins
E00055ENType certificate held by Cfm International S.A. · 49 models listed · revised August 19, 2024
E00056ENType certificate held by Cfm International S.A. · 49 models listed · revised August 19, 2024
Safety bulletins 4 · advice, not orders
2014-05-28NE-08-17R3 · Turbine Section - Propulsion Technology LLC Unapproved Repair
2011-03-07NE-08-17R2 · Turbine Section - Propulsion Technology LLC Unapproved Repair
2008-05-22NE-08-17R1 · Propulsion Technology LLC Unapproved Repair
2008-05-14NE-08-17 · Propulsion Technologies International Unapproved Repair
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 23 with this engine series
Where they are
- Washington 8 of these aircraft
- Utah 6 of these aircraft
- Montana 3 of these aircraft
- Illinois 3 of these aircraft
- Delaware 2 of these aircraft
Biggest operators
- Alaska Airlines INC 8 of these aircraft
- Bank Of Utah Trustee 5 of these aircraft
- United Airlines INC 3 of these aircraft
- Wilmington Trust CO Trustee 1 of these aircraft
Airworthiness
- FAA orders naming the CFM International CFM56-7B27/B3 24 airworthiness directives
- Failure reports on the CFM International CFM56-7B27/B3 363 reports since 1995
Analytics
These connections as data: /graph/engine/cfm-international-cfm56-7b27-b3.json · about the eFlight graph.
Aircraft newest certificates first · 23
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N972BJ | Boeing 737-7AN |
Fixed-wing, multi-engine | Flye Aviation CORP Kalispell, Montana |
Standard | 2026-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N235JF | Boeing 737-7EJ |
Fixed-wing, multi-engine | Flye Aviation CORP Kalispell, Montana |
Standard | 2026-01-23 | ValidFAA registration status code V: Valid registration. All codes |
| N20TM | Boeing 737-7JY |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2024-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N583AS | Boeing 737-890 |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2023-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N584AS | Boeing 737-890 |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2023-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N9PF | Boeing 737-7HZ |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2022-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N512AS | Boeing 737-890 |
Fixed-wing, multi-engine | Wilmington Trust CO Trustee Wilmington, Delaware |
Standard | 2022-02-01 | ValidFAA registration status code V: Valid registration. All codes |
| N950TR | Boeing 737-7CG |
Fixed-wing, multi-engine | Ohio Resources LLC Camden, Delaware |
Standard | 2019-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N592AS | Boeing 737-890 |
Fixed-wing, multi-engine | Umb Bank Na Trustee Salt Lake City, Utah |
Standard | 2019-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N324CH | Boeing 737-7ET |
Fixed-wing, multi-engine | N324Ch LLC Miami, Florida |
Standard | 2018-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N8767 | Boeing 737-7EG |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2017-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N162WC | Boeing 737-7BC |
Fixed-wing, multi-engine | Wca Holdings III LLC Missoula, Montana |
Standard | 2010-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N527AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-05-26 | ValidFAA registration status code V: Valid registration. All codes |
| N525AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-04-06 | ValidFAA registration status code V: Valid registration. All codes |
| N524AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N38424 | Boeing 737-924ER |
Fixed-wing, multi-engine | United Airlines INC Chicago, Illinois |
Standard | 2008-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N594AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2008-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N39416 | Boeing 737-924ER |
Fixed-wing, multi-engine | United Airlines INC Chicago, Illinois |
Standard | 2008-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N78509 | Boeing 737-824 |
Fixed-wing, multi-engine | United Airlines INC Chicago, Illinois |
Standard | 2008-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N590AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2008-01-15 | ValidFAA registration status code V: Valid registration. All codes |
| N587AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-11-02 | ValidFAA registration status code V: Valid registration. All codes |
| N586AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N585AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-09-24 | 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.