Federal Register #FAA-2026-3664

FAA Special Conditions for Modified Airbus C-212 and Robinson R66 Aircraft

The Federal Aviation Administration (FAA) has issued special regulatory conditions for certain aircraft modified with advanced avionics and battery systems: - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs and Vendors: - Airbus Defense and Space S.A. (manufacturer of C-212 Series airplanes) - Xtreme Avionics, LLC (modifier and installer of lithium-ion battery systems) - Robinson Helicopter Company (manufacturer of R66 helicopter) - Skyryse (modifier and installer of fly-by-wire flight control system) - Products/Services Referenced: - Rechargeable lithium-ion battery system for backup power of the GI 275 Standby Display (for Airbus C-212 Series aircraft) - Four-axis full authority digital fly-by-wire flight control system (for Robinson R66 helicopter) - Unique/Notable Requirements: - FAA determined that existing airworthiness regulations do not fully address the safety implications of these novel design features - Special conditions establish additional safety standards for rechargeable lithium battery installations and digital fly-by-wire systems - Applies to all similar modifications of the referenced aircraft models - No procurement, purchase, or service request is made; this is a regulatory notice establishing safety standards for specific aircraft modifications.

Description

These special conditions are issued for the Airbus Defense and Space S.A. Model C-212-CB, C-212-CC, C-212-CD, C-212-CE, C-212-CF, and C-212-DF airplanes as modified by Xtreme Avionics, LLC. The modification introduces a novel design feature: a rechargeable lithium-ion battery for backup power of the GI 275 Standby Display. The existing airworthiness regulations do not adequately address safety standards for this design feature. These special conditions establish additional safety standards to ensure a level of safety equivalent to existing standards.

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