FAA Proposes AD for Modified Airbus H160-B Over Evacuation Window Flaw
Aviation News Editor & Industry Analyst delivering clear coverage for a worldwide audience.
The FAA has proposed an airworthiness directive for modified Airbus H160-B helicopters to address a faulty window jettisoning system impacting evacuations.
Key Takeaways
- •Proposes new Airworthiness Directive for Airbus H160-B helicopters
- •Addresses faulty window jettison system on aircraft with STC SR00223IB
- •Follows a similar safety directive issued by Europe's EASA
- •Sets April 13, 2026, as the deadline for public comments
The U.S. Federal Aviation Administration (FAA) has issued a Notice of Proposed Rulemaking (NPRM) for a new Airworthiness Directive (AD) concerning all Airbus Helicopters Model H160-B helicopters. The proposed rule addresses a potential unsafe condition related to the emergency window jettisoning function on aircraft that have been altered by a specific Supplemental Type Certificate (STC). The issue could impede emergency evacuation, prompting the regulator to mandate corrective actions.
The proposed AD, detailed in Docket No. FAA-2026-2283, focuses on a failure in the window jettisoning system that could prevent its proper operation during an emergency. This action stems from a similar directive issued by the European Union Aviation Safety Agency (EASA), highlighting a trend of international cooperation in aviation safety regulations. The FAA is inviting public comment on the proposal until April 13, 2026.
Details of the Proposed Directive
The NPRM applies specifically to Airbus H160-B helicopters modified by STC SR00223IB. This certificate approves a major modification to the aircraft's original type design. According to the FAA's filing in the Federal Register, the unsafe condition was discovered following the implementation of this STC. The regulator determined that the modification could interfere with the window jettisoning mechanism, which is critical for rapid passenger and crew egress in situations such as a water landing or post-crash fire.
This action was prompted by EASA AD 2025-0269, which addressed the same safety concern for helicopters operating under its jurisdiction with a similar EASA-approved STC. The FAA's proposal indicates a harmonization of safety standards between the two major global aviation authorities. If adopted, the AD would likely require inspections and potential modifications or component replacements to ensure the window jettison system functions as designed on all affected U.S.-registered helicopters.
The Affected Aircraft: Airbus H160-B
The Airbus H160-B is a modern, twin-engine medium utility helicopter designed for a variety of missions, including offshore transportation, emergency medical services, and private aviation. As a Transport Category helicopter, it is certified to stringent safety standards. The aircraft is powered by two Safran Arrano 1A turboshaft engines and has a maximum seating capacity of 14, including flight crew.
The H160 program achieved significant milestones with its type certification from EASA on July 1, 2020, followed by FAA approval on June 30, 2023. Its entry into service marked the introduction of advanced technologies, including a composite airframe and the Helionix avionics suite. The proposed AD underscores the continuous airworthiness monitoring that all aircraft undergo throughout their operational lives, particularly when modified from their original factory configuration.
Understanding Supplemental Type Certificates
An STC is an FAA approval for a major alteration to an aircraft that is not part of the original type certificate. These modifications can range from avionics upgrades and interior reconfigurations to changes in airframe components. While STCs allow operators to customize aircraft for specific missions, they also introduce new variables that require rigorous safety assessment.
The current issue with the H160-B highlights the complexities of post-certification modifications. A change that seems isolated can sometimes have unintended consequences on other aircraft systems. This is why regulators require that STC applicants demonstrate that the modification does not compromise the aircraft's overall safety and airworthiness. The proposed AD serves as a regulatory backstop to correct unforeseen issues that may arise after an STC is implemented and the aircraft enters service.
What Comes Next
With the NPRM published, the next step is the public comment period, which closes on April 13, 2026. During this time, owners, operators, maintenance organizations, and other stakeholders can submit feedback to the FAA. The agency will review all comments before deciding whether to issue a final AD. The final rule may be identical to the proposal or could be revised based on the feedback received. Once an AD is finalized, compliance is mandatory for all owners of the affected aircraft registered in the United States.
Why This Matters
This proposed directive for the Airbus H160-B is significant as it demonstrates the proactive nature of modern aviation safety oversight. Rather than waiting for an incident to occur, regulators are acting on identified risks linked to post-certification modifications. The alignment between the FAA and EASA on this issue reinforces the global commitment to harmonized safety standards, ensuring that critical safety knowledge is shared and acted upon across international borders.
Get breaking commercial aviation news and expert airline analysis at flying.flights. Discover how innovation is shaping aviation through aircraft systems, avionics, and digital tools at flying.flights/technology.
Written by Ujjwal Sukhwani
Aviation News Editor & Industry Analyst delivering clear coverage for a worldwide audience. Covers flight operations, safety regulations, and market trends with expert analysis.
Visit Profile
