Advisory Circulars Advisory Circulars are issued to provide guidance to the industry on subjects related to procedures. Design and ProductionToggle accordion Subject Notice. No Date Certification, Design and Production of Articles fabricated by Additive Manufacturing (PDF, 162KB) AC 21-7(0) 26 May 2023 Guidance on Application of a CAAS Letter of Acceptance of Type Certificate (PDF, 124KB) AC 21-6(0) 19 May 2023 Working Arrangement between EASA and CAAS on Airworthiness Certification-Implementation Procedures(PDF, 52 KB) AC 21-5(0) 24 Nov 2017 Test Witnessing and Conformity Inspection(PDF,35 KB) AC 21-4(0) 10 Mar 2017 Implementation Procedures for the Technical Arrangement for Airworthiness Certification Between CAAS and CASA(PDF,34 KB) AC 21-3(0) 8 May 2015 Responsibilities of Supplemental Type Certificate (STC) Holders(PDF,38 KB) AC 21-2(0) 16 May 2011 Approval Requirements for Modifications and Repairs(PDF,57 KB) AC 21-1(3) 16 Jan 2018 MaintenanceToggle accordion Subject Notice. No Date Guidance on Alternative Means of Compliance (AMOC) to Foreign Airworthiness Directives (PDF, 100KB) AC 39-1(0) 15 Mar 2022 Guidance for Replacement for Fire Extinguishing Agents Cancelled 1 Oct 2018 Calibration of Compass (PDF, 45 KB) AC SAR-2(0) 28 Dec 2012 Maintenance of Aircraft or Aircraft Components away from Approved Location(s) (PDF, 138KB) AC 145-17(0) 30 Jul 2021 Implementation Procedures for the Technical Arrangement on Aviation Maintenance between CAAS and CAAC(PDF, 320KB) AC 145-16(0) 17 Jun 2021 Implementation Procedures for the Technical Arrangement on Aviation Maintenance between CAAS and UKCAA(PDF, 239KB) AC 145-15(0) 1 Jan 2021 Schedule of Experience and On-the-Job Training Programme(PDF, 133 KB) AC 145-14(0) 26 Nov 2020 Implementation Procedures for Technical Arrangement on Aviation Maintenance between CAAS and JCAB (PDF, 190KB) AC 145-13(1) 20 Jul 2022 Non-Destructive Testing - Testing, Qualification and Certification of Personnel(PDF, 137 KB) AC 145-12(0) 13 Nov 2018 Safety Management System - Framework for the Establishment of Safety Performance Indictors for AMO(PDF,73 KB) AC 145-11(0) 01 Feb 2017 Implementation Procedures for the Technical Arrangement on Aviation Maintenance between CAAS and CASA(PDF,62 KB) AC 145-10(0) 05 Jul 2013 Extension of Quality System to Overseas Non SAR-145 Certificate Holder(PDF,27 KB) AC 145-9(0) 05 Oct 2012 Authorisation of Line Maintenance Certifying Staff(PDF,29 KB) AC 145-8(0) 03 Oct 2012 Requirement for Approval of Welders(PDF,22 KB) AC 145-7(0) 11 Aug 2010 Usage of Parts Removed from an Aircraft No Longer in Service and Disposal of Scrap Parts (PDF, 27 KB) AC 145-6(0) 17 Jul 2008 Requirement for CAAS L12 Basic Paper for Workshop Certifying Staff and its Syllabus(PDF,15 KB) AC 145-5(0) 17 Jan 2005 Implementation Procedures for the Technical Arrangement on Aviation Maintenance Between CAAS and Hong Kong CAD(PDF,49 KB) AC 145-4(1) 17 Sep 2008 Acceptability of Aircraft Parts (PDF, 168KB) AC 145-3(8) 8 Aug 2022 Initial Qualification Requirements for Certifying Staff(PDF, 152 KB) AC 145-2(4) 23 May 2019 Implementation Procedures for the Technical Arrangement on Aviation Maintenance between CAAS & TCCA(PDF,404 KB) AC 145-1(0) 10 Feb 2003 Safety Information Bulletin Safety Information Bulletin is issued to provide safety knowledge to our aviation partners for their awareness and adjustment to their operations as necessary. Design and ProductionToggle accordion Subject SIB No. Date MaintenanceToggle accordion Subject SIB No. Date One-Time Escalation (OTE) of Maintenance Tasks for Singapore Registered Commercial Air Transport (CAT) Aircraft (PDF, 534KB) CAAS SIB 2020-02 R2 15 Mar 2022