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Department of Transportation
Federal Aviation Administration
• 14 CFR Part 39
• [Docket No. FAA-2025-5035; Project Identifier MCAI-2025-00707-R; Amendment 39-23262; AD 2026-04-03]
• RIN 2120-AA64
AGENCY:
Federal Aviation Administration (FAA), DOT.
ACTION:
Final rule.
SUMMARY:
The FAA is adopting a new airworthiness directive (AD) for all Leonardo S.p.A. Model AB139 and AW139 helicopters. This AD was prompted by a report of interference found in the overhead panel area between the electrical cables and adjacent connectors. This AD requires repetitively inspecting the overhead panel and, depending on the results, repairing or replacing the damaged wires. This AD also requires modifying the overhead panel on certain helicopters. The FAA is issuing this AD to address the unsafe condition on these products.
DATES:
This AD is effective April 2, 2026.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of April 2, 2026.
ADDRESSES:
AD Docket:
You may examine the AD docket at
regulations.gov
under Docket No. FAA-2025-5035; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
• For European Union Aviation Safety Agency (EASA) material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email:ADs@easa.europa.eu;
website:
easa.europa.eu.
You may find the EASA material on the EASA website at
ad.easa.europa.eu.
• You may view this material at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood
( printed page 9444)
Parkway, Room 6N-321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222-5110. It is also available at
regulations.gov
under Docket No. FAA-2025-5035.
FOR FURTHER INFORMATION CONTACT:
Michael Yeshiambel, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (316) 946-4133; email:
michael.m.yeshiambel@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Leonardo S.p.A. Model AB139 and AW139 helicopters. The NPRM was published in the
Federal Register
on December 4, 2025 (90 FR 55817). The NPRM was prompted by EASA AD 2025-0094, dated April 24, 2025 (EASA AD 2025-0094) (also referred to as the MCAI), issued by EASA, which is the Technical Agent for the Member States of the European Union. The MCAI states a report of interference was found in the overhead panel are…
Fonte: Federal Register (federalregister.gov). Texto original em inglês.