CFM International CFM56-3B
3 aircraft on the U.S. register carry a CFM International CFM56-3B engine, rated at about 22,100 pounds of thrust. The Boeing 737 is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1987 and 2009.
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 CFM56-3B. FAA spelling: CFM56-3B.
Where they are owner's state
Kind of aircraft
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the CFM International CFM56-3B the component layer
The design is held under 2 type certificates. The FAA has issued 25 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 25 airworthiness directives · newest first
Certificates and bulletins
Safety bulletins 3 · advice, not orders
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
- Boeing 737 2 with this engine series
- Airbus A321 1 with this engine series
- Career Aviation CO INC 1 of these aircraft
- Bank Of Utah Trustee 1 of these aircraft
- American Airlines INC 1 of these aircraft
- FAA orders naming the CFM International CFM56-3B 25 airworthiness directives
These connections as data: /graph/engine/cfm-international-cfm56-3b.json · about the eFlight graph.
Aircraft newest certificates first · 3
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N634BC | Boeing 737-3Y0 |
Fixed-wing, multi-engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2024-05-04 | ValidFAA registration status code V: Valid registration. All codes |
| N578TR | Boeing 737-3TO |
Fixed-wing, multi-engine | Career Aviation CO INC Wilmington, Delaware |
Standard | 2022-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N196UW | Airbus A321-211 |
Fixed-wing, multi-engine | American Airlines INC Fort Worth, Texas |
Standard | 2015-12-30 | 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.