By Trend News Line 2024-06-21 00:00:00.
The Federal Aviation Administration (FAA) has proposed a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. This proposed AD comes after a report of an in-flight event where isolation valve caution messages were received, indicating a potential safety issue. The FAA is seeking comments on this proposed AD, with the deadline for submissions being August 5, 2024.
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The proposed AD would require inspecting the fuse/shuttle valve serial numbers and replacing certain fuse/shuttle valves as specified in a Transport Canada AD. The FAA aims to address the unsafe condition on these specific aircraft models to ensure passenger safety and aircraft integrity.
Comments on the proposed AD can be submitted through various methods, including the Federal eRulemaking Portal, fax, mail, or hand delivery. The AD docket can be examined online at regulations.gov or in person at Docket Operations in Washington, DC. Material incorporated by reference can be found on the Transport Canada website and regulations.gov under Docket No. FAA-2024-1692.
Gabriel Kim, an Aviation Safety Engineer at the FAA, can be contacted for further information on this proposed AD. The FAA invites relevant data, views, or arguments about the proposal, with comments to be submitted with the specific docket number provided.
Background information from Transport Canada highlights an in-service event where a crew received isolation valve caution messages, leading to further investigations into a fuse/shuttle valve assembly error. The proposed AD aims to rectify this issue to prevent potential safety hazards during flight operations.
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The FAA’s determination to issue this NPRM is based on the unsafe condition identified by Transport Canada, and the proposed AD requirements align with the actions specified in Transport Canada AD CF-2024-01. Compliance information is detailed in the NPRM, with costs of compliance estimated for U.S. operators of the affected airplanes.
The FAA estimates the costs of required actions and any necessary on-condition actions that may be needed based on inspection results. The agency has considered all known costs in its estimate, with the possibility of warranty coverage reducing the financial impact on affected operators.
Overall, the proposed AD aims to enhance the safety and airworthiness of De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. Stakeholders are encouraged to review the proposal and provide feedback to ensure the effectiveness of the regulatory measures..
– Airworthiness Directives for De Havilland Aircraft of Canada Limited Airplanes
– Bombardier Inc. Type Certificate Airworthiness Directives for De Havilland Aircraft of Canada Limited Airplanes.
