The head of the National Transportation Safety Board criticized aviation regulators for “downplaying the urgency” of a possible rudder malfunction on some Boeing aircraft in an unusually public rebuke.

The head of the National Transportation Safety Board says the Federal Aviation Administration needs to up the urgency on the potential for jammed flight

The National Transportation Safety Board issued urgent safety recommendations to Boeing over a steering defect related to its 737 planes, adding its growing list of woes.