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Boeing Co (N:BA) in December issued a service bulletin that disclosed procedures for detailed inspections and repairs or replacement if needed for panels on top of the engine housing that may not ensure adequate shielding of the underlying wiring. The FAA proposed an airworthiness directive in February to mandate inspections. The 737 MAX, Boeing’s best-selling plane, has been grounded since March 2019 after crashes in Indonesia and Ethiopia killed 346 people.
