Customers of Boeing's Next-Generation 737 are validating the benefits of the industry-leading Performance Improvement Package (PIP), one year after the first airplane PIP airplane was delivered. PIP combines aerodynamic and engine performance improvements to reduce fuel burn by up to 2 percent and is part of the continuous innovation on the world's best-selling airplane. More than 420 Next-Generation 737s have now been delivered with PIP.

"The Performance Improvement Package has contributed to a remarkable fuel mileage improvement compared to the non-PIP airplanes," said Takeshi Katsurada, vice president of flight operations engineering for Japan Airlines.

"We can validate its improvement through each delivery flight performance monitoring and also daily flight operations monitoring to the extent of more than 2 percent fuel mileage improvement."

Elements of the performance improvement package, provided at no charge to customers, have been gradually introduced on the 737 over the past year.

They include aerodynamic-shaped anti-collision lights, streamlined slat and spoiler trailing edges, ski-jump wheel well fairings re-contoured to smooth the air flow near the main landing gear, and enhancements to the CFM engine.

A re-contoured plug and cutback nozzle completed the propulsion portion of the performance improvement package. The final element of the package, a redesigned environmental control system exhaust vent, is scheduled for mid-2013.

"These improvements are important for our airline customers," said Beverly Wyse, vice president and general manager of the 737 program, Boeing Commercial Airplanes.

"The improved fuel savings are part of our commitment to deliver market-leading value to Next-Generation 737 customers. Improving fuel efficiency by 2 percent saves more than $120,000 annually on each airplane and reduces the carbon footprint."

Boeing began performance improvement testing in November 2010 with the goal of reducing fuel consumption by up to 2 percent.

"Our latest tests have shown that aircraft, which incorporate the Performance Improvement Package, provide flydubai with up to 1.6 percent reduced fuel burn over non-PIP aircraft," said Ghaith Al Ghaith, CEO of flydubai.

"With a growing fleet, any savings we can make towards our fuel costs are positive from both a financial and environmental perspective. We look forward to Boeing introducing the final part of the package, which will provide us with even greater fuel savings."