# United Airlines Boeing 737 MAX 10 seat surplus > Live situation record from CLSTR: https://clstr.news/situations/united-airlines-boeing-737-max-10-seat-surplus > Updated: 2026-08-31T18:39:13.000Z. Sources: 5. Developments: 2. United Airlines is managing a surplus of hundreds of premium lie-flat business class seats that cannot be installed on its current fleet. These seats were specifically ordered for the Boeing 737 MAX 10, an aircraft variant facing significant certification delays. While United initially expected these planes to enter service around 2020, deliveries are now anticipated in 2027. To address premium transcontinental needs during these delays, United shifted its strategy to use the Airbus A321neo in a “Coastliner” configuration. However, the stored business class seats are incompatible with the Airbus fleet. Further complications have emerged regarding the Boeing 737 MAX 10. Beyond the certification timeline, reports suggest potential structural issues, specifically that the aircraft’s floor beams may be unable to support the weight and mounting loads required for the planned premium cabin. United originally intended to use these seats to replace Boeing 757s on long-haul domestic routes. ## Timeline ### 2026-08-31: United Airlines faces seat installation issues for Boeing 737 MAX 10 United Airlines faces a predicament with hundreds of lie-flat seats intended for the delayed Boeing 737 MAX 10, which may not fit or be supported by the aircraft's floor beams. 2 sources. https://clstr.news/cluster/united-airlines-faces-seat-installation-issues-for-boeing-737-max-10 ### 2026-08-24: United Airlines holds hundreds of unused business class seats United Airlines has hundreds of unused business class seats in storage due to certification delays of the Boeing 737 MAX 10, which forced the carrier to pivot to Airbus A321neo aircraft. 4 sources. https://clstr.news/cluster/united-airlines-holds-hundreds-of-unused-business-class-seats --- Cite as: United Airlines Boeing 737 MAX 10 seat surplus. CLSTR, https://clstr.news/situations/united-airlines-boeing-737-max-10-seat-surplus