The latest episode in one of the longest and most successful marriages in civil aerospace got under way on 13 June at an engine test facility near Paris. CFM International fired up for the first time the Leap-1B for the Boeing 737 Max at partner Snecma’s Villaroche site. As the sole propulsion supplier to the programme, CFM has a backlog of over 4,000 engines for the more than 2,000 re-powered twinjets on order, and is continuing a relationship of over three decades, during which the GE/Snecma joint venture has built almost 14,000 CFM56-7 and -3 engines, beginning with the 737-300 in the early 1980s.
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