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

(b)(c)Where an organisation produces fabricated assemblies where the airworthinessof aircraft may be directly affected, knowledge of aerospace methods ofconstruction, joining technology etc. may be necessary depending on theparticular work being undertaken. Appropriate aerospace experience andsector scheme qualification may be required.In the case of organisations involved in repair or overhaul activities where thedetection of in-service defects is required, or in the case of the manufacture ofstressed or load-bearing aircraft structure, knowledge of aerospace methods ofconstruction, joining technology, in-service flaws and regulatory requirementsis required. Specific aerospace experience and sector scheme qualification isexpected.4 EN4179 Developments - PR EN4179 P3 (February 2003)4.1 The recent work to harmonise EN4179 / NAS410 did not address all of theDirector-General's concerns regarding the standard. Organisations revisingtheir written practices to comply with the revised standard need to ensure thatthey remain in compliance with Airworthiness Notice No. 94. The PREN4179 P3 paragraph references given below are to assist organisations inidentifying areas of interest to the Director-General.EN4179 P3paragraphAreas of Interest1.1 There is a distinction between Certification of Personnel as aresult of training/examination and Certification of Inspectionsas used in HKAR-66 and HKAR-145. Once PersonnelCertification is in place, an organisation must authorise a personin accordance with its procedures so that person can carry outand certify NDT inspections.4.1 In order to comply with the requirements of AirworthinessNotice No. 94, written practices developed by sub-contractorsmust be approved by the controlling approved organisation.4.5.2 A "responsible" Level 3 under EN4179 must be centrallycertified to be acceptable to the Director-General as aNominated Level 3 under Airworthiness Notice No. 94.5.1 Requirements for Qualification.4.2 The EN4179 requirements for the levels of qualification of NDT personnel donot satisfy the requirements of Airworthiness Notice No. 94, specifically:Level 1 - EN4179 permits trainees to obtain work experience under theAN-94 A1 P.330 May 2006