Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes

<RULE> DEPARTMENT OF TRANSPORTATION <SUBAGY>Federal Aviation Administration</SUBAGY> <CFR>14 CFR Part 39</CFR> <DEPDOC>[Docket No. FAA-2025-2260; Project Identifier MCAI-2025-00043-T; Amendment 39-23207; AD 2025-24-10]</DEPDOC> <RIN>RIN 2120-AA64</RIN> <SUBJECT>Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Federal Aviation Administration (FAA), DOT. <HD SOURCE="HED">ACTION:</HD> Final rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> The FAA is adopting a new airworthiness directive (AD) for all Gulfstream Aerospace LP Model Gulfstream 100, Astra SPX, and 1125 Westwind Astra airplanes. This AD was prompted by a determination that new airworthiness limitations are necessary. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate new airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> This AD is effective January 16, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of January 16, 2026. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> <E T="03">AD Docket:</E> You may examine the AD docket at <E T="03">regulations.gov</E> under Docket No. FAA-2025-2260; 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. <E T="03">Material Incorporated by Reference:</E> • For Civil Aviation Authority of Israel (CAAI) material identified in this AD, contact CAAI, P.O. Box 1101, Golan Street, Airport City, 70100, Israel; telephone 972-3-9774665; email <E T="03">aip@mot.gov.il.</E> You may find this material on the CAAI website at <E T="03">www.gov.il/en/pages/israeli-airworthiness-directives.</E> • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195. It is also available at <E T="03">regulations.gov</E> under Docket No. FAA-2025-2260. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> Trevor Carlton, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: 404-474-5597; email: <E T="03">trevor.p.carlton@faa.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">Background</HD> The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Gulfstream Aerospace LP Model Gulfstream 100, Astra SPX, and 1125 Westwind Astra airplanes. The NPRM was published in the <E T="04">Federal Register</E> on August 21, 2025 (90 FR 40784). The NPRM was prompted by CAAI AD I-32-25-01-7, dated January 13, 2025 (CAAI AD ISR I-32-25-01-7) (also referred to as the MCAI), issued by CAAI, which is the aviation authority for Israel. The MCAI states an in-service failure of the nose landing gear (NLG) actuator-to-strut attachment pin was reported. The FAA has determined that new airworthiness limitations are necessary for NLG actuator-to-strut attachment pins, part numbers (P/Ns) 2247.0500.007 and 2247.0500.008. In the NPRM, the FAA proposed to require revising the existing maintenance or inspection program, as applicable, to incorporate new airworthiness limitations, as specified in CAAI AD ISR I-32-25-01-7. The FAA is issuing this AD to prevent failure of the NLG actuator-to-strut attachment pin. The unsafe condition, if not addressed, could result in failure of the NLG to retract and lock after takeoff or extend and lock before landing. You may examine the MCAI in the AD docket at <E T="03">regulations.gov</E> under Docket No. FAA-2025-2260. <HD SOURCE="HD1">Discussion of Final Airworthiness Directive</HD> <HD SOURCE="HD1">Comments</HD> The FAA received a comment from an individual who supported the NPRM without change. <HD SOURCE="HD1">Conclusion</HD> These products have been approved by the civil aviation authority of another country and are approved for operation in the United States. Pursuant to the FAA's bilateral agreement with this State of Design Authority, that authority has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data, considered any comments received, and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these products. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. <HD SOURCE="HD1">Material Incorporated by Reference Under 1 CFR Part 51</HD> The FAA reviewed CAAI AD ISR I-32-25-01-7, which specifies new airworthiness limitations for safe life limits of the NLG actuator-to-strut attachment pins, P/Ns 2247.0500.007 and 2247.0500.008. This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the <E T="02">ADDRESSES</E> section. <HD SOURCE="HD1">Costs of Compliance</HD> The FAA estimates that this AD affects 86 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: The FAA has determined that revising the existing maintenance or inspection program takes an average of 90 work-hours per operator, although the agency recognizes that this number may vary from operator to operator. Since operators incorporate maintenance or inspection program changes for their affected fleet(s), the FAA has determined that a per-operator estimate is more accurate than a per-airplane estimate. Therefore, the agency estimates the average total cost per operator to be $7,650 (90 work-hours × $85 per work-hour). <HD SOURCE="HD1">Authority for This Rulemaking</HD> Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency's authority. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. <HD SOURCE="HD1">Regulatory Findings</HD> This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a “significant regulatory action” under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. <LSTSUB> <HD SOURCE="HED">List of Subjects in 14 CFR Part 39</HD> Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. </LSTSUB> <HD SOURCE="HD1">The Amendment</HD> Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: <HD SOURCE="HED">PART 39—AIRWORTHINESS DIRECTIVES</HD> <REGTEXT TITLE="14" PART="39"> 1. The authority citation for part 39 continues to read as follows: <HD SOURCE="HED">Authority:</HD> 49 U.S.C. 106(g), 40113, 44701. </REGTEXT> <REGTEXT> <SECTION> <SECTNO>§ 39.13 </SECTNO> <SUBJECT>[Amended]</SUBJECT> </SECTION> 2. The FAA amends § 39.13 by adding the following new airworthiness directive: <EXTRACT> <FP SOURCE="FP-2"> <E T="04">2025-24-10 Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.):</E> Amendment 39-23207; Docket No. FAA-2025-2260; Project Identifier MCAI-2025-00043-T. </FP> <HD SOURCE="HD1">(a) Effective Date</HD> This airworthiness directive (AD) is effective January 16, 2026. <HD SOURCE="HD1">(b) Affected ADs</HD> None. <HD SOURCE="HD1">(c) Applicability</HD> This AD applies to all Gulfstream Aerospace LP Model Gulfstream 100, Astra SPX, and 1125 Westwind Astra airplanes, certificated in any category. <HD SOURCE="HD1">(d) Subject</HD> Air Transport Association (ATA) of America Code 32, Landing gear. <HD SOURCE="HD1">(e) Unsafe Condition</HD> This AD was prompted by a determination that new airworthiness limitations are necessary. The FAA is issuing this AD to prevent failure of the nose landing gear (NLG) actuator-to-strut attachment pin. The unsafe condition, if not addressed, could result in failure of the NLG to retract and lock after takeoff or extend and lock before landing. <HD SOURCE="HD1">(f) Compliance</HD> Comply with this AD within the compliance times specified, unless already done. <HD SOURCE="HD1">(g) Requirements</HD> Except as specified in ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 15k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━