US Army Technical Manual, AVIATION UNIT MAINTENANCE (AVUM), AND, AVIATION INTERMEDIATE MAINTENANCE (AVIM), MANUAL, NONDESTRUCTIVE INSPECTION PROCEDURES FOR OH-58D HELICOPTER, TM 1-1520-266-23, 1997

US Army Technical Manual, AVIATION UNIT MAINTENANCE (AVUM), AND, AVIATION INTERMEDIATE MAINTENANCE (AVIM), MANUAL, NONDESTRUCTIVE INSPECTION PROCEDURES FOR OH-58D HELICOPTER, TM 1-1520-266-23, 1997

a. This manual provides necessary information to enable qualified personnel to perform NDI on OH-58D
helicopters. The selection of components in this manual are based on a review of applicable Technical manuals
listed in Table 1-1. All existing NDI call outs were updated. New NDI procedures were developed for those parts
that required check, inspect or any other NDI related actions. Section I of this manual contains a list of special
terms, abbreviations, acronyms, information on how to use the manual, use of NDI symbols, and a list of
publications. Section I also contains general information on the OH-58D helicopter, including descriptive data,
access panels, major assemblies, stops, handholds, walkways, various NDI method descriptions, and rules of
safety to be observed during nondestructive inspections.