A comprehensive, easy to read study guide for persons looking to study for the various Avionic and Electronics certification tests. These include study materials for the NCATT AET and the FCC certifications. This book has received very positive reviews by technicians who now have passed the NCATT AET and FCC GROL tests.Don't forget to get the new companion worksheet book. this book has 68 worksheets in essay format that covers all 34 subject areas. This worksheet book helps you study and practice for the NCATT AET test.