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NTSB Issues Urgent Warning After 737 Rudder Control Failures

NTSB Issues Urgent Warning After 737 Rudder Control Failures

BY BHAVYA VELANI Published on September 28, 2024 0 COMMENTS

The US National Transportation Safety Board (NTSB) has issued an alert regarding a defective component in certain Boeing 737 aircraft that could potentially cause rudder control system failure.

 

This safety concern affects approximately 350 parts supplied by Collins Aerospace, a subsidiary of RTX, for select 737 Max and 737 NG models.

 

Boeing 737 Rudder Issues

 

In response to this critical issue, the NTSB has directed urgent safety recommendations to the Federal Aviation Administration (FAA) and Boeing. The FAA reports that United Airlines Holdings is the sole US carrier with the affected parts, but the agency believes the airline has already discontinued their use.

 

The problem stems from an incorrectly assembled sealed bearing on the components, known as actuators. According to the NTSB's findings, this manufacturing flaw has left the unsealed area vulnerable to moisture infiltration, which could freeze and restrict rudder system movement.

 

Boeing has acknowledged the issue and is collaborating with its supplier to develop additional guidance for addressing this potential rudder system malfunction. 

 



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Photo: AeroXplorer | Cooper Palubeski

 

The aircraft manufacturer had previously notified operators of a possible problem in August and has committed to ensuring that flight crews have appropriate operating procedures.

 

RTX, the parent company of Collins Aerospace, has pledged close cooperation with the NTSB and Boeing throughout the investigation. The company also supports affected airlines to minimize operational disruptions.

 

This safety concern adds to Boeing's mounting challenges following a January incident where a fuselage panel detached from a 737 Max aircraft shortly after takeoff. The plane maker is grappling with a significant labor strike, bringing production to a standstill at its Seattle-area jetliner factories.

 

NTSB Uncovered Issue

 

The National Transportation Safety Board (NTSB) uncovered a critical flaw while investigating a February 6 incident involving a United Airlines-operated Boeing 737 Max 8. The plane's rudder pedals jammed during landing at Newark Liberty International Airport, though no injuries or damage occurred.

 



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Photo: AeroXplorer | Nicolas Williams

 

Boeing faces NTSB recommendations to review procedures for pilots encountering similar situations and to alert crews operating affected planes about potential in-flight system jams. 
 
The safety board urged the Federal Aviation Administration (FAA) to assess whether faulty parts should be removed from aircraft and to direct operators accordingly.
 
The NTSB also advised the FAA to notify international aviation regulators if part removal is necessary. 
 
Responding to these recommendations, the FAA has accepted the NTSB's guidance and scheduled a review board meeting for Friday to determine future actions. The agency, a NTSB investigation participant, closely monitors the situation.

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Bhavya Velani
An Aircraft maintenance engineering graduate and passionate aviation journalist with experience in working with a renowned publication such as Airlive, Airways Magazine Aviation A2Z, etc During my free time, I watch documentaries and read nonfiction books.

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NEWS BoeingBoeing737Boeing737 MAXBoeing 737 IssuesNTSB

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