Airworthiness directives › 2021-12-09
AD 2021-12-09 Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
Models named: MBB-BK 117 D-2. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-2 helicopters, certificated in any category, having an affected part as defined in European Union Aviation Safety Agency (EASA) AD 2019-0198, dated August 15, 2019 (EASA AD 2019-0198).
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 EASA AD 2019-0198.
Unsafe condition
This AD was prompted by a short circuit in a yaw trim actuator connector that occurred during production electrical tests. Subsequent investigations determined that a sharp edge in the wire harness trim connector backshell damaged the wiring insulation. The FAA is issuing this AD to address an unsafe condition that could result in yaw or pitch trim runaway and subsequent loss of 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