The Federal Aviation Administration issued a safety alert to airlines regarding Boeing 737 airplanes equipped with certain rudder components. The air-safety regulator said Tuesday the operators of Boeing 737 NG and 737 MAX airplanes with SVO-730 rudder rollout guidance actuators should instruct flight crews that the rudder control system could potentially become jammed or restricted in flight or during landing. Boeing said in a statement it has reminded operators of the proper actions that flight crews should take if they encounter rudder restriction, and has also shared technical guidance from its supplier.