# FAA Boeing 737 NG stabilizer inspections > Live situation record from CLSTR: https://clstr.news/situations/faa-boeing-737-ng-stabilizer-inspections > Updated: 2026-10-25T22:21:27.000Z. Sources: 6. Developments: 2. The Federal Aviation Administration (FAA) issued a mandatory airworthiness directive for inspections of the horizontal stabilizer mechanisms on nearly 2,000 Boeing 737 Next Generation (NG) aircraft registered in the United States. The directive follows reports from multiple operators regarding unwanted nose oscillations and instability caused by anomalous movements in the tail surface. The inspections aim to identify excessive mechanical play in the components that allow the stabilizer to pivot, which the FAA warns could lead to ‘flutter’—dangerous aeroelastic vibrations that may result in a loss of aircraft control. The mandate covers specific 737-600, -700, -800, and -900 series models, though it explicitly excludes the 737 MAX. Operators are required to measure clearances in pivot bearings and adjustment screw mechanisms, performing repairs or replacements as necessary. While some airlines requested flexible timelines, the FAA denied those requests. The directive also impacts international fleets, including those of Ryanair and Air Europa in Spain. ## Timeline ### 2026-10-25: FAA orders urgent inspections of Boeing 737 NG aircraft The FAA has ordered inspections of Boeing 737 NG horizontal stabilizer mechanisms following reports of instability. Ryanair and Air Europa are among the affected operators in Spain. 2 sources. https://clstr.news/cluster/faa-orders-urgent-inspections-of-boeing-737-ng-aircraft ### 2026-10-23: FAA mandates inspections for nearly 2,000 Boeing 737 aircraft The FAA has ordered mandatory inspections for nearly 2,000 Boeing 737 Next Generation aircraft to address stabilizer issues that could cause dangerous vibrations and loss of control. 4 sources. https://clstr.news/cluster/faa-mandates-inspections-for-nearly-2000-boeing-737-aircraft --- Cite as: FAA Boeing 737 NG stabilizer inspections. CLSTR, https://clstr.news/situations/faa-boeing-737-ng-stabilizer-inspections