AD 2025-17849
Published 2025-09-16 · 6 models · 96 US-registered tails affected · Federal Register
Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters Federal Register ↗
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, EC635T2+, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 helicopters. This AD was prompted by a review of design data and the determination for recalculation of accumulated hoist boom cycles (cycles) and repetitive inspections. This AD requires determining the total cycles of certain hoist boom assemblies, inspecting those hoist boom assemblies, and depending on the results, taking corrective action. This AD also prohibits installing those hoist boom assemblies unless certain requirements are met. 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 44491. View on Federal Register ↗
[Federal Register Volume 90, Number 177 (Tuesday, September 16, 2025)] [Rules and Regulations] [Pages 44491-44493] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2025-17849]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0630; Project Identifier MCAI-2023-00518-R; Amendment 39-23131; AD 2025-18-04] RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135P3, EC135T1, EC135T2, EC135T2+, EC135T3, EC635T2+, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 helicopters. This AD was prompted by a review of design data and the determination for recalculation of accumulated hoist boom cycles (cycles) and repetitive inspections. This AD requires determining the total cycles of certain hoist boom assemblies, inspecting those hoist boom assemblies, and depending on the results, taking corrective action. This AD also prohibits installing those hoist boom assemblies unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective October 21, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publications listed in this AD as of October 21, 2025.