CFM56-5B Acoustic Upgrade Certification Imminent
Published on 15th June 2003
CFM56-5B engines, which power the Airbus A318, A319, A320, and A321, are produced by CFM International (CFM), a 50/50 joint company between Snecma Moteurs (Safran Group) of France and General Electric Company.
CFM and Airbus defined the acoustic package to ensure this aircraft/engine combination will operate well within proposed limits. The upgrade kit, which includes a core chevron nozzle and improved reverser treatment in the nacelle, was designed to reduce noise levels to 10 EPNdB (effective perceived noise in decibels) below FAR 36 Stage 3 noise limits. During the Airbus flight test program recently conducted on an A321, the upgraded propulsion system achieved design intent and, as a result, will meet, with significant margin, the new noise regulations taking effect January 1, 2006.
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About CFM International
ABOUT CFM INTERNATIONAL
A 50/50 joint venture between GE Aerospace and Safran Aircraft Engines, CFM International has redefined international cooperation and helped change the course of commercial aviation since its founding in 1974. Today, CFM is the world’s leading supplier of commercial aircraft engines with a product line that sets the industry standard for efficiency, reliability, durability, and optimized cost of ownership. CFM produces the LEAP family of engines and supports LEAP and CFM56 fleets for operators worldwide. For the future of air transport, CFM’s RISE program is accelerating development of new propulsion technologies that will pave the way for the next generation of aircraft. Discover more at www.cfmaeroengines.com