From Investing.com:

The FAA has notified airlines to inspect newer Boeing 737 MAX planes for possible loose bolts in the rudder control system. Boeing discovered a missing nut on an international operator’s aircraft during routine maintenance, prompting the inspections. United Airlines doesn’t expect these inspections to impact their operations. The 737 MAX was grounded for 20 months following fatal crashes in 2018 and 2019. The FAA has carefully monitored the MAX, tracking all 737 MAX airplanes using satellite data in 2021. Boeing is still awaiting certification of its smaller 737 MAX 7 and larger MAX 10.



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