Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
airworthiness · Rule · Final rule. · Published 2025-09-24 · Effective 2025-10-29 · 90 FR 45909
Document
Document number
2025-18491
Federal Register citation
90 FR 45909
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Airbus
Publication date
2025-09-24
Effective date
2025-10-29
FAA docket
Docket No. FAA-2025-0750
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-3 helicopters. This AD is prompted by reports of momentary direct current (DC) power interruption in flight of both essential busses. This AD requires revising the existing rotorcraft flight manual (RFM) to incorporate an emergency and malfunction procedure. The FAA is issuing this AD to address the unsafe condition on these products.