The FAA has published an airworthiness directive for Boeing 747 airplanes, effective January 14, 2021.
Airworthiness directive
The FAA has published an airworthiness directive for Boeing 747 airplanes, effective January 14, 2021.
Primary source: https://www.federalregister.gov/documents/2020/12/10/2020-27006/airworthiness-directives-the-boeing-company-airplanes
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