CFM International CFM56-7B27
47 aircraft on the U.S. register carry a CFM International CFM56-7B27 engine, rated at about 27,300 pounds of thrust. The Boeing 737 is the model most often fitted with it (47 aircraft). The aircraft carrying it were built between 2000 and 2012.
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. FAA spelling: CFM56-7B27.
Where they are owner's state
Washington34Texas7Utah2Delaware2Minnesota1Illinois1
Kind of aircraft
Airliners and large jets47 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the CFM International CFM56-7B27 the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 2,673 failure reports with the FAA since 1995, 1,240 of them in the last ten years.
Failure reports 2,673 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Engine136Blade123Eec108Warning Light102Shim95Actuator90Wire Harness84Warning Message71Connector62Probe54
Latest reports
2026-10-03Adiru: faulty
2026-10-03Apu: faulted
2026-10-03Unknown: odor
2026-10-02Lamp: inoperative
2026-10-02Battery Pack: inoperative
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 47 with this engine series
Where they are
- Washington 34 of these aircraft
- Texas 7 of these aircraft
- Utah 2 of these aircraft
- Delaware 2 of these aircraft
- Minnesota 1 of these aircraft
Biggest operators
- Alaska Airlines INC 34 of these aircraft
- Southwest Airlines CO 7 of these aircraft
- Wilmington Trust CO Trustee 2 of these aircraft
- Umb Bank Na Trustee 2 of these aircraft
- Sun Country INC 1 of these aircraft
Airworthiness
- Failure reports on the CFM International CFM56-7B27 2,673 reports since 1995
Analytics
These connections as data: /graph/engine/cfm-international-cfm56-7b27.json · about the eFlight graph.
Aircraft newest certificates first · 47
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N282AD | Boeing 737-8Q8 |
Fixed-wing, multi-engine | Aar Aircraft & Engine Sales & Leasing INC Wood Dale, Illinois |
Standard | 2025-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N516AS | Boeing 737-890 |
Fixed-wing, multi-engine | Wilmington Trust CO Trustee Wilmington, Delaware |
Standard | 2022-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N513AS | Boeing 737-890 |
Fixed-wing, multi-engine | Umb Bank Na Trustee Salt Lake City, Utah |
Standard | 2021-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N506AS | Boeing 737-890 |
Fixed-wing, multi-engine | Umb Bank Na Trustee Salt Lake City, Utah |
Standard | 2021-10-20 | ValidFAA registration status code V: Valid registration. All codes |
| N523AS | Boeing 737-890 |
Fixed-wing, multi-engine | Wilmington Trust CO Trustee Wilmington, Delaware |
Standard | 2020-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N808SY | Boeing 737-8BK |
Fixed-wing, multi-engine | Sun Country INC Minneapolis, Minnesota |
Standard | 2020-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N8310C | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N8309C | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N8308K | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N538AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2012-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N8306H | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8305E | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-05-04 | ValidFAA registration status code V: Valid registration. All codes |
| N8302F | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-03-27 | ValidFAA registration status code V: Valid registration. All codes |
| N8301J | Boeing 737-8H4 |
Fixed-wing, multi-engine | Southwest Airlines CO Dallas, Texas |
Standard | 2012-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N537AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2012-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N536AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2012-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N535AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2011-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N533AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2011-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N534AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2011-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N532AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2010-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N531AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2010-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N530AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2010-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N528AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2009-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N526AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N520AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2009-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N519AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N518AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2009-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N517AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2009-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N514AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2008-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N508AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2008-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N597AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2008-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N596AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2008-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N589AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N588AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N581AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N579AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N577AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-03-29 | ValidFAA registration status code V: Valid registration. All codes |
| N570AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N569AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2007-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N566AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N568AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2007-01-30 | ValidFAA registration status code V: Valid registration. All codes |
| N565AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2006-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N563AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2006-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N559AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2006-10-27 | ValidFAA registration status code V: Valid registration. All codes |
| N560AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seatac, Washington |
Standard | 2006-10-13 | ValidFAA registration status code V: Valid registration. All codes |
| N558AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2006-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N557AS | Boeing 737-890 |
Fixed-wing, multi-engine | Alaska Airlines INC Seattle, Washington |
Standard | 2006-08-08 | 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.