2025-07-07: Main Rotor Blades

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2025-07-07 Leonardo S.p.a.: Amendment 39-23009; Docket No. FAA-2024-2425; Project Identifier MCAI-2023-00967-R. (a) Effective Date This airworthiness directive (AD) is effective May 23, 2025. (b) Affected ADs None. (c) Applicability This AD applies to Leonardo S.p.a. Model A109C, A109E, A109S, and AW109SP helicopters, certificated in any category. (d) Subject Joint Aircraft System Component (JASC) Code 6210, Main Rotor Blades. (e) Unsafe Condition This AD was prompted by a report of a quality escape on a batch of main rotor blades (MRBs). The FAA is issuing this AD to detect and address non-conforming MRB tip caps. The unsafe condition, if not addressed, could result in premature debonding of an MRB tip cap, loss of the MRB tip cap in flight, and subsequent loss of control of, and damage to, the helicopter, and injury to occupants. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2023-0159, dated August 10, 2023 (EASA AD 2023-0159). (h) Exceptions to EASA AD 2023-0159 (1) Where EASA AD 2023-0159 requires compliance in terms of flight hours, this AD requires using hours time-in-service. (2) Where EASA AD 2023-0159 refers to its effective date, this AD requires using the effective date of this AD. (3) Where the note in the material referenced in paragraph (1) of EASA AD 2023-0159 specifies that the hammer tapping inspection must be performed only by appropriate qualified personnel in accordance with the national aviation regulation; for this AD, the tap test must be accomplished by persons authorized under 14 CFR 43.3. These inspections must be performed by at least a Level I inspector certified in the FAA-acceptable standards for nondestructive inspection personnel. (4) Where paragraph (2) of EASA AD 2023-0159 states "any deficiency;" this AD requires replacing that text with "any debonding." (5) Where paragraph (2) of EASA AD 2023-0159 states "replace that affected part with a serviceable part in accordance with the instructions of Part II of the ASB;" this AD requires replacing that text with "replace that affected part, as defined in EASA AD 2023-0159, with a serviceable part, as defined in EASA AD 2023-0159." (6) Where paragraph (3) of EASA AD 2023-0159 states "replace each affected part with a serviceable part in accordance with the instructions of Part II of the ASB;" this AD requires replacing that text with "replace each affected part, as defined in EASA AD 2023-0159, with a serviceable part, as defined in EASA AD 2023-0159." (7) This AD does not adopt the "Remarks" section of EASA AD 2023-0159. (i) No Reporting Requirement Although the material referenced in EASA AD 2023-0159 specifies to submit certain information to the manufacturer, this AD does not require that action. (j) Special Flight Permits Special flight permits may be issued in accordance with 14 CFR 21.197 and 21.199 to operate the helicopter to a location where the MRB replacement can be performed, provided no passengers are onboard. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the International Validation Branch, send it to the attention of the person identified in paragraph (l) of this AD and email to: [email protected]. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (l) Additional Information For more information about this AD, contact Frank Huynh, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (404) 983-5288; email: [email protected]. (m) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2023-0159, dated August 10, 2023. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: [email protected]; website: easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. (4) 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. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email [email protected]. Issued on April 1, 2025. Steven W. Thompson, Acting Deputy Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2025-06711 Filed 4-17-25; 8:45 am]BILLING CODE 4910-13-P