Airworthiness directives › 2021-10-18
AD 2021-10-18 Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
Models named: MBB-BK117 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 Model MBB-BK117 D-2 helicopters, certificated in any category, all serial numbers, having an affected part defined in European Union Aviation Safety Agency (EASA) AD 2020-0084, dated April 3, 2020 (EASA AD 2020-0084).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2020-0084.
Unsafe condition
This AD was prompted by reports that collective lever switch units having certain part numbers did not have retaining rings installed in the cable cut switch guard. The cable cut switch guard has an axis that holds, and allows the guard to turn over, the cable cut switch. This axis is secured with two retaining rings and if both retaining rings are missing, the axis can move out. The FAA is issuing this AD to address this condition, which could cause inadvertent activation of the rescue hoist cable cut function, resulting in personal injury.
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