Another Max8 issue found.
Rudder pedals that became stuck in neutral position during the landing of a Boeing 737 Max 8 operated by United Airlines may have been related to a cold-soaked rudder roll-out guidance servo.
www.flightglobal.com
Testing of the roll-out guidance servo removed from the 737 conducted on 28 February at Collins Aerospace’s facility in Iowa examined the potential effects of cold-soaking the components.
”Testing at room temperature found that the torque to rotate the servo’s output crank arm was within design specifications,” the agency says. The unit was then cold-soaked for 1h and re-tested, and investigators found ”that the torque to move the servo’s output crank arm was significantly beyond the specified design limits.” “