The CFM56-5B is the engine of choice for the A320 family, havin been selected to power nearly 60 percent of the A318/A319/A320/A321 aircraft ordered. One of the primary factors behind the CFM56-5B's broad-based market acceptance has been its simple, rugged architecture, which gives it the highest reliability, durability and repairability in its class.

PROVEN

The CFM56-5B, a high-performance, low-risk derivative engine of the CFM56 family, was originally developed to power the Airbus A321. Today, it is the only engine that can power every model of the A320 family with one bill of materials. More than 5,000 CFM56-5B engines have been delivered and this fleet has accumulated more than 80 million flight hours.

BREAKTHROUGH

The CFM56-5B was the first engine to introduce advanced double annular combustor (DAC) technology in the mid-1990s. This technology reduced NOx (oxides of nitrogen) emissions by as much as 45 percent.

CFM keeps investing in technology enhancements that make the CFM56-5B even better. In October 2007, Tech Insertion became the production configuration for all CFM56-5B engines. Tech Insertion provides operators with significant improvements in fuel consumption, emissions levels, and maintenance costs.

Most recently, as of November 2011, all deliveries are in CFM56-5B/3 PIP configuration. This new production standard provides 0.5% improved fuel efficiency and 1% lower maintenance cost.

QUICK FACTS

Highest fan pressure ratio in the CFM56 family

Improved engine control unit (ECU) and control processing unit (CPU)

First use of ultra-low-emissions combustor in commercial service