Airworthiness directives › 2022-02-20
AD 2022-02-20 Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Models named: MBB-BK 117 C-2, MBB-BK 117 D-2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 C-2 and MBB-BK 117 D-2 helicopters, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2021-0074, dated March 15, 2021 (EASA AD 2021-0074).
Unsafe condition
This AD was prompted by a report that a collective bellcrank-K (affected part) was found incorrectly installed on a helicopter. Subsequent investigations found that the affected part was an in-service replacement, and that the position marking on that part was incorrect. The FAA is issuing this AD to address incorrect installation of a collective bellcrank-K, which could lead to unwanted collective input, resulting in reduced control of the helicopter.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1