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Notice Nearby copied this notice onto the public register from Federal Register. It is not a paid Notice Nearby publication, not an Affidavit of Publication, and not a Placement Certificate. Original: https://www.federalregister.gov/documents/2026/10/08/2026-20677/airworthiness-directives-various-helicopters.

The notice titled Airworthiness Directives; Various Helicopters, publication number NN-2026-10044, was copied onto the Notice Nearby public register from a public government source. It is not a paid Notice Nearby placement.
First public: Oct 7, 2026, 5:00 PM PDT. Last date: October 8, 2026. No Notice Nearby fee.
Register URL: https://noticenearby.com/notices/ingest-f61fdbd89a69a8e9
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Airworthiness Directives; Various Helicopters The FAA proposes to adopt a new airworthiness directive (AD) for all helicopters equipped with a radio (also known as radar) altimeter. This proposed AD was prompted by the determination that radio altimeters cannot be relied upon to perform their intended function if they experience interference from wireless broadband operations in the 3.7 to 3.98 GHz frequency band (5G Lower C-Band) while operating in Canadian airspace. This proposed AD would require revising the existing rotorcraft flight manual (RFM) for the helicopter to incorporate limitations prohibiting certain operations requiring radio altimeter data when operating within Canadian airspace. The FAA is proposing this AD to address the unsafe condition on these products. Agency: Transportation Department, Federal Aviation Administration. Document type: Proposed Rule. Document number: 2026-20677. Official Federal Register document. Matter furnished by the National Archives Federal Register API. Notice Nearby is not the publisher of record for this item. Source: https://www.federalregister.gov/documents/2026/10/08/2026-20677/airworthiness-directives-various-helicopters

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