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The U.S. Federal Aviation Administration has granted Boeing an amended type certificate for the 737-7 airplane, clearing it for commercial service. Boeing and launch customer Southwest Airlines are preparing for delivery of the first airplane. The FAA also updated Boeing Production Certificate No. 700 to include the 737-7.
A comparative fuel burn study conducted by Aircraft Commerce evaluated 14 widebody engine-airframe combinations across the commercial airline sector. According to ranking details reported by aviation news outlet Simple Flying on August 3, 2026, the Boeing 787-10 Dreamliner aircraft powered by GEnx engines achieved the top position overall. The GEnx-powered Boeing 787-10 Dreamliner came first in fuel burn efficiency, outperforming 13 other widebody engine and airframe combinations assessed in the study.
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