Federal Register #FAA-2025-5730

FAA proposes high-altitude airworthiness conditions for Honda HA-480 aircraft

The Federal Aviation Administration is proposing airworthiness conditions for the Honda Aircraft Company LLC Model HA-480, rather than seeking to purchase products or services. - Government buyer: U.S. Department of Transportation (DOT), Federal Aviation Administration (FAA); no sub-agency or office is specified. - OEM: Honda Aircraft Company LLC, manufacturer of the Model HA-480. - Proposed requirement: The aircraft is designed to operate at altitudes up to 47,000 feet. For cabin pressurization above 45,000 feet, its pressure-vessel structure—including the fuselage, doors, and windows—would need to meet 14 CFR 23.2225(c)(3) using a 1.67 factor instead of 1.33. - Procurement status: This is a proposed regulatory action, not a solicitation or purchase request; no products, services, quantities, or contract value are specified.

Description

The FAA proposes special conditions for the Honda Aircraft Company LLC Model HA-480 airplane, which is designed for operations up to 47,000 feet. The proposed requirements address pressure vessel integrity for cabin pressurization above 45,000 feet. The fuselage pressure vessel structure, including doors and windows, must meet 14 CFR 23.2225(c)(3) using a factor of 1.67 instead of 1.33. Comments are due by November 19, 2026.

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