Federal Register #2026-10854

FAA Airworthiness Directive: Inspection and Conditional Replacement for Embraer EMB-505 Horizontal Stabilizer Components

The Federal Aviation Administration (FAA) has issued an airworthiness directive (AD) targeting Embraer S.A. Model EMB-505 airplanes to address safety concerns with horizontal stabilizer components. - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEM Highlight: - Embraer S.A. is the sole Original Equipment Manufacturer (OEM) referenced - Products/Services Requested: - Inspection of left-hand and right-hand horizontal stabilizer (HS) backlash for 41 aircraft - Conditional replacement of: - Left-hand and right-hand horizontal to vertical stabilizer hinge point attachment parts - Left-hand and right-hand pitch trim actuator rod-end attachment parts - Pitch trim actuator - No specific part numbers provided - Notable Requirements: - Inspections must be completed within 12 months or 750 flight hours for Group 1 aircraft, and within 24 months or 1,000 flight hours for Group 2 aircraft - Replacement of parts is required only if inspection results indicate non-compliance - The directive incorporates requirements from ANAC AD 20250401 - Estimated inspection cost is $1,360 per airplane; potential repair costs may reach $14,950 per airplane - The AD aims to prevent vibration and reduced controllability due to invalid HS backlash test results - Locations: - FAA Headquarters, Washington, DC - FAA Airworthiness Products Section, Kansas City, MO - U.S. Department of Transportation Docket Operations, Washington, DC - ANAC Continuing Airworthiness Technical Branch, Sao Jose dos Campos, Brazil

Description

The FAA is adopting a new airworthiness directive (AD) for certain Embraer S.A. Model EMB-505 airplanes. This AD was prompted by the possibility that some airplanes may have invalid horizontal stabilizer (HS) backlash test results due to the use of incorrect procedures. The AD requires inspecting the airplane's left-hand and right-hand HS backlash and replacing, as applicable, certain hinge point and pitch trim actuator attachment parts and the pitch trim actuator. The FAA is issuing this AD to address the unsafe condition on these products.

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