Download or read book Aviation Unit and Intermediate Troubleshooting Manual for Army AH-64A Helicopter, Theory of Operation written by and published by . This book was released on 1990 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Army AH-64A Helicopter Systems Theory of Operation manual (TM 1-1520-238-T-9) may be used in conjunction with the wiring information in the Army AH-64A Helicopter Wiring Diagrams manual to troubleshoot any fault not isolated by the appropriate maintenance operational check and the associated fault isolation procedures. It provides troubleshooting information and theory of operation information for the Army AH-64A Helicopter only.