Loose Bolt Prompts MAX Inspections

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Key Takeaways:

  • Boeing is urging airlines to inspect all 1,370 in-service 737 MAX jets for a possible loose bolt in the rudder control system.
  • This alert, coordinated with the FAA, was prompted by the discovery of a missing or improperly tightened nut on the rudder control system during maintenance on two separate aircraft.
  • While inspections are estimated to take two hours, no in-service incidents have been reported due to this condition so far, with the FAA considering further action based on new findings.
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Boeing is urging airlines to inspect 737 MAX jets for a possible loose bolt in the rudder control system, the Federal Aviation Administration said Thursday. 

In coordination with the agency, Boeing issued a Muti-Operator Message (MOM), targeted to operators of newer single-aisle aircraft, prompted by the discovery of a missing nut on a bolt during routine maintenance by an international operator. Additionally, an undelivered aircraft was also found with a nut that was not properly tightened.

In a press release issued Thursday, the FAA asked operators to review their Safety Management Systems to determine if they have previously identified any instances of loose hardware. The agency said inspections should take two hours. 

According to a CNN report, Boeing confirmed the repair of the aircraft with the missing bolt but emphasized the need to inspect all 1,370 737 Max aircraft currently in service for similar issues. So far, no in-service incidents have been caused due to the condition. 

The FAA will consider further action based on any new findings regarding any loose or missing hardware. 

Amelia Walsh

Amelia Walsh is a private pilot who enjoys flying her family’s Columbia 350. She is based in Colorado and loves all things outdoors including skiing, hiking, and camping.
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