Boeing has asked airlines to inspect all of their 737 Max jets for a potential loose bolt in the rudder system after an airline discovered a potential problem with a key part on two aircraft.
An unnamed international airline found a bolt with a missing nut in a rudder-control linkage mechanism while conducting routine maintenance – and it found a similar bolt that wasn’t properly tightened in a yet-to-be delivered plane. An airplane’s rudder is used to control and stabilize the aircraft while in flight.

