Airworthiness directives › 2017-05-08
AD 2017-05-08 Airworthiness Directives; Safran Helicopter Engines, S.A. Turboshaft Engines
Applicability*9
This AD applies to all Safran Helicopter Engines S.A. Arriel 2B turboshaft engines with a pre-modification (mod) TU 158 hydro-mechanical metering unit (HMU), installed.
Compliance
After the effective date of the AD, do not install any pre-mod TU 158 HMU into any engine.
Required actions
For the purpose of this AD, an HMU eligible for installation is one that incorporates mod TU 158 in accordance with Safran Helicopter Engines, S.A. Mandatory Service Bulletin No. 292 73 3158, Version A, dated April 7, 2016, or other FAA-approved parts.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. (1) For an engine in pre-mod TU 158 configuration, within 200 engine hours, or within 5 months, whichever occurs first after the effective date of this AD, remove the pre-mod TU 158 HMU from service and replace it with a part eligible for installation. (2) Reserved.
Affected ADs
None.
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