NTSB investigating 'stuck' rudder pedals on United Airlines 737 MAX jet

Investigators at the U.S. National Transportation Safety Board  -  NTSB are looking into another incident involving the troubled 737 MAX aircraft, following an incident when the rudder pedals stopped working on a United Airlines plane last month.

The aircraft was performing flight UA1539, from Nassau, Bahamas, to Newark Liberty International Airport in New Jersey on 6th February 2024 when the incident occurred.  According to the preliminary report,  before the aircraft had reduced to taxing speed,  the rudder pedals for both the captain and the first officer stopped working. "The captain used the nose wheel steering tiller to keep the airplane near the runway centerline while slowing to a safe taxi speed before exiting the runway onto a high-speed turn-off," the report documented.  

The flight data recorder showed that the rudder surface position remained near its neutral position as the plane landed and during its rollout, despite the crew putting force on the rudder pedals, which was increasing.  The report said "Significant pedal force input was observed along with corresponding rudder surface movement. Afterward, the rudder pedals and rudder surface began moving as commanded and continued to function normally for the remainder of the taxi."  

737 MAX plane maker Boeing issued a statement this week,  "We worked closely with United Airlines to diagnose the rudder response issue observed during two 737-MAX 8 flights in early February. With coordination with United, the issue was successfully resolved with the replacement of three parts and the airplane returned to service last month."

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