31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

Release to Service and, therefore, the fitness of a correctly identifiedcomponent to be installed on an aircraft.2.4 It follows that the person issuing the Certificate of Release to Service for theinstallation of an aircraft component must be satisfied that its overhaul, repair,modification or inspection was carried out in a manner and with material of atype approved by the Director-General, or that the component is new. Thefollowing paragraphs provide guidance on how this can be established.3 DefinitionNote: Authorised Release Document accepted under this Airworthiness Noticeand its appendices are only for the purpose of maintenance ormanufacturing of component and do not constitute the approval ofdesign data. Modifications or repairs that consist of design approvalrecorded on the Authorised Release Document are subject to approvalby the Director-General under HKAR-1 or HKAR-21.For the purpose of this Airworthiness Notice the following definitions apply:-(a)(b)Aircraft Component means any part of an aircraft including a completepowerplant and any operational or emergency equipment.Standard Parts A part is considered as a standard part where it is designatedas such by the design approval holder responsible for the product, part orappliance in which the part is intended to be used.In order to be considered a standard part, all design, manufacturing, inspectiondata and marking requirements necessary to demonstrate conformance of thatpart must be in the public domain and published as part of a national orinternational specification.Note:Parts which are the subject of specific product or equipment approvals such asTechnical Standard Orders (TSO), Joint Technical Standard Orders (JTSO) orEuropean Technical Standard Orders (ETSO) are not considered as standard parts.When designating a standard part, the design approval holder should ensurethat the effect on the design of any manufacturing tolerances within thespecification are fully taken into account in the intended application. If it isfound necessary to apply additional qualification or selection criteria over andabove the published specification in order to satisfy the intended designrequirements (such as enhanced levels of inspection, burn-in, or environmentaltests etc.) then the design approval holder should allocate its own part numberreference and such parts cannot be considered as standard parts.(c)Certifying Person is a person appropriately authorised in accordance with theExposition of an Approved organisation, or an appropriately Type RatedHKAR-66 Aircraft Maintenance Licence holder who issues the Certificate ofRelease to Service for a complete aircraft, or the installation of a component(s)31 January 2010 AN-17 P.2