This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards Guides and Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:F3526-21 INTERNATIONAL Standard Guide for Aircraft Instrument Systems Technician Certification1 This standard is issued under the fixed designation F3526:the number immediately following the designation indicates the year of original adoption or in the case of revision.the year of last revision.A number in parentheses indicates the year of last reapproval.A superseript epsilon (s)indicates an editorial change since the last revision or reapproval. 1.Scope 4.Significance and Use 1.1 The purpose of this guide is to address the basic 4.1 The guide is intended to be used to assess petencies fundamental subject knowledge activities and functions for of qualified individuals who wish to bee certified as an AIS avionics professionals to be titled Aircraft Instrument Systems Technician through a certification program. (AIS)Technician. 4.2 The guide is intended ...