United Order for Airbus A321XLRs Strikes Blow to NMA @ainonline UTC United Airlines' Tuesday announcement of an order for 50 Airbus A321XLRs to replace its fleet of aging Boeing 757s might have struck another serious blow to the business case for Boeing's proposed twin-aisle NMA, a project about which the U.S. company has said little since the second crash and subsequent worldwide grounding of the 737 Max. United, meanwhile, had already reached the late stages of negotiations on the A321XLR, an airplane it calls an "ideal one for one replacement" for its older, less fuel-efficient jets—namely, its 757s. Prev Next Comments

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