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Department of Transportation
Federal Aviation Administration
• 14 CFR Part 39
• [Docket No. FAA-2024-2425; Project Identifier MCAI-2023-00967-R; Amendment 39-23009; AD 2025-07-07]
• 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 A109C, A109E, A109S, and AW109SP helicopters. This AD was prompted by a report of a quality escape on a batch of main rotor blades (MRBs). This AD requires repetitively tap inspecting certain MRBs and replacing those MRBs. This AD also prohibits installing those MRBs, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
DATES:
This AD is effective May 23, 2025.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of May 23, 2025.
ADDRESSES:
 
AD Docket:
You may examine the AD docket at
regulations.gov
under Docket No. FAA-2024-2425; 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 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 this 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 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 atregulations.gov
under Docket No. FAA-2024-2425.
FOR FURTHER INFORMATION CONTACT:
Frank Huynh, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (404) 983-5288; email:
frank.huynh@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 A109C, A109E, A109S, and AW109SP helicopters. The NPRM published in the
Federal Register
on November 19, 2024 (89 FR 91291). The NPRM was prompted by AD 2023-0159, dated August 10, 2023, issued by EASA, which is the Technical Agent for the Member States of the European Union (EASA AD 2023-0159) (also referred to as the MCAI). The MCAI states that a report was received of a quality escape on a batch of MRBs, where the tip cap had been replaced by following a procedure and using tools not in accordance with Leonardo Technical Publi…
Fonte: Federal Register (federalregister.gov). Texto original em inglês.