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Transportation Department Federal Aviation AdministrationFederal RegisterMed source confidence · 76%Jul 1, 2026, 6:34 PM UTC · 6d ago

Airworthiness Directives; MD Helicopters, LLC Helicopters

Case File

The FAA is proposing a new airworthiness directive for MD Helicopters, LLC Model 369D, 369E, 369F, 369FF, 369H, and 500N helicopters. This rule requires a one-time visual inspection of the main transmission drive shaft couplings for cracks. Depending on the inspection results, replacements may be necessary. The effective date is July 1, 2026.

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Why This Matters

Operators of the affected MD Helicopters must comply with the inspection requirement to ensure safety. They need to inspect the couplings and replace them if necessary.

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