Federal Register #2026-13218

FAA Airworthiness Directive for Boeing 757/767: 5G Interference Mitigation in Canadian Airspace

The Federal Aviation Administration (FAA), under the Department of Transportation, has issued a regulatory airworthiness directive (AD) for all Boeing 757 and 767 airplanes due to 5G wireless interference risks in Canadian airspace. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - Aircraft Certification Service, Integrated Certificate Management Division - OEM Highlight: - The Boeing Company is the only OEM specifically referenced - Products/Services and Requirements: - Affects 1,084 U.S.-registered Boeing 757 and 767 airplanes - Requires revision of the Airplane Flight Manual (AFM) for non-radio altimeter tolerant airplanes to include operational limitations for dispatch, approach, landing, and go-around in Canadian airspace - Optional modifications permitted to achieve compliance: - Replacement of radio altimeters with 5G-tolerant models (estimated up to $120,000 per airplane) - Addition of interference-mitigating filters (estimated up to $14,040 per filter) - Notable Requirements: - Compliance is mandatory before further flight in Canadian airspace after the effective date - Only airplanes with radio altimeters proven tolerant to 5G interference are exempt from new limitations - No specific part numbers or product quantities for hardware are listed, as this is a regulatory action with optional upgrade paths

Description

This final rule issued by the Federal Aviation Administration (FAA) addresses an unsafe condition related to radio altimeters on Boeing Model 757 and 767 airplanes. The interference from wireless broadband operations in the 3.7-3.98 GHz frequency band (5G Lower C-Band) affects the reliability of radio altimeters when operating in Canadian airspace. The directive requires revising the airplane flight manual to include operational limitations for dispatch, approach, landing, and go-around procedures in Canadian airspace to mitigate increased flightcrew workload and maintain safe flight. Comments on this rule are open until August 14, 2026.

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