AD 2025-20482
Published 2025-11-20 · 4 models · 52 US-registered tails affected · Federal Register
Airworthiness Directives; Airbus Helicopters Federal Register ↗
Abstract
The FAA is superseding Airworthiness Directive (AD) 2019-19- 13, which applied to certain Airbus Helicopters Model EC225LP helicopters. AD 2019-19-13 required determining the total hours time- in-service (TIS) of the free wheel shafts of certain main rotor gearboxes (MGBs), replacing the MGB or right-hand side (RH) free wheel shaft, installing placard(s), and revising the rotorcraft flight manual (RFM) for the helicopter. Since the FAA issued AD 2019-19-13, an additional part-numbered MGB has been identified to have the same unsafe condition and the FAA determined that additional changes are necessary. This AD requires the actions of AD 2019-19-13 and expands the applicability by adding the additional part-numbered MGB, changes the requirement to determine the total hours TIS of a certain free wheel shaft, requires repetitive replacement of the MGB or the RH free wheel shaft, changes the requirements for who can replace parts, and expands the parts installation limitation conditions. The FAA is issuing this AD to address the unsafe condition on these products.
Applicability · by US fleet size
Federal Register text
Verbatim; the Federal Register publication is the legally binding document. Cite: 90 FR 52234. View on Federal Register ↗
[Federal Register Volume 90, Number 222 (Thursday, November 20, 2025)] [Rules and Regulations] [Pages 52234-52237] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-20482]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0909; Project Identifier MCAI-2023-00895-R; Amendment 39-23198; AD 2025-24-03] RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2019-19- 13, which applied to certain Airbus Helicopters Model EC225LP helicopters. AD 2019-19-13 required determining the total hours time- in-service (TIS) of the free wheel shafts of certain main rotor gearboxes (MGBs), replacing the MGB or right-hand side (RH) free wheel shaft, installing placard(s), and revising the rotorcraft flight manual (RFM) for the helicopter. Since the FAA issued AD 2019-19-13, an additional part-numbered MGB has been identified to have the same unsafe condition and the FAA determined that additional changes are necessary. This AD requires the actions of AD 2019-19-13 and expands the applicability by adding the additional part-numbered MGB, changes the requirement to determine the total hours TIS of a certain free wheel shaft, requires repetitive replacement of the MGB or the RH free wheel shaft, changes the requirements for who can replace parts, and expands the parts installation limitation conditions. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective December 26, 2025.
ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2025-0909; 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
[[Page 52235]]
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.
FOR FURTHER INFORMATION CONTACT: Frank Huynh, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (404) 983-2588; email: [email protected].