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Aerospace
Industries Association (AIA). This group developed concepts for IETM authoring, IETM presentation and data interchange which were used as the basis for standard development. In 1989 the US Navy, Air Force and Army formed an ad-hoc group to determine the best way to create standards for IETMS. Input from the use of NTIPS and CMAS, later renamed Integrated Maintenance Information System(IMIS), were used along with input from the CALS Industry Steering Group (ISG) Paperless Technical Manual Committee, the Navy A-12 Program, The Air Force ATF Program, and the Army PMDE Program's IETM Style Guide as a starting point for a working group for IETM standards. The group came out with the first formally issued set of standards in 1992. By 1994, Senior R&D Engineer Michael Weldon, working on behalf of LORAL Corporation, developed a demonstration White Paper IETM describing the use of an IETM utilizing an eyeglass Monitor interfaced with a portable belt mounted CD Player for hands free use by technicians in the field, i.e. as when working on a tower 60 feet AGL.
171:(now called Armstrong Laboratory) at Wright-Patterson Air Force Base, and the David Taylor Research Center (now called Naval Surface Warfare Center, Carderock Division) in Bethesda, Maryland. Programs developed by the Navy, Navy Technical Information Presentation System (NTIPS) and the Air Force, Computer-based Maintenance Aid System (CMAS), were used along with user surveys, technological analysis and design studies to come up with the basic concepts for IETMs. Based on field tests with technicians maintaining military equipment, the tests found that performance was greatly improved and dramatic improvement occurred for inexperienced technicians. One questionnaire found that 90% of the technicians preferred electronic manuals and found them easier to use.
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Class 5 - In this class the documentation is now integrated with expert systems that may influence the display of content. For example, the IETM system may aggregate data from a large number of users input, feed that to the expert system that analyzes it and then the result gets fed back to the user
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Class 3 - The difference between Class II and Class III is analogous to the difference between PDF book and a web site. The book structure is discarded; instead the document is structured more freely following the logic of the content. The document can still be printed but it won't necessarily match
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Because of the positive results, the
Department of Defense identified the need for standardization of the IETM development. In 1987 a joint military and commercial group was formed consisting of the Office of the Secretary of Defense Computer-assisted Acquisition and Logistics Support (OSD CALS) and
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Class 6 - A network model database was used. Dynamic multi-destination hyperlink system was used. Included system-oriented layers and troubleshooting, assembly and disassembly aspects. The
Advanced Interactive Electronic Technical Manual (A-IETM 1992) was an R&D Augmented Reality (AR) version
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and removal of data redundancy. Relationships in the content that are presented as hyperlinks, are mapped directly to relations in the database schema. Redundancy in the data that exists in earlier classes should be removed. The sequence of presentation is also different from earlier classes. There
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Due to the imprecise nature of the generic descriptions used in the class and level description of IETMs, IETMs are now defined using a
Functionality Matrix. IETMs can have many different features and the Functionality Matrix is used as a checklist of which features are required for a particular
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Research was performed in the 1970s and 1980s by all branches of the US military to obtain information on what the goals should be for the electronic technical manuals. Early research was conducted at the Army
Communicative Technology Office at Ft. Eustis, the Air Force Human Resources Laboratory
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In the United States, in the late 1970s, the US Military began to look at other ways to produce technical manuals. With the introduction of computer technology it was theorized that moving technical manuals to an electronic format would obtain a cost savings, allow better integration with other
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of this system designed to help to guide the standards used in the mark-up of the documentation - the idea being a UI-independent data stream. Maintenance in the field and training were both benefits of this system. Created for, and by, NAWCAD/IST.
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IETM. This checklist more precisely defines what functionality an IETM has, and allows clearer communication between an IETM developer and the IETM customer. Classes and levels of IETMS are no longer regarded as acceptable descriptors of IETMs.
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is no longer the concept of a static page. Content can change dynamically based on users navigation and input through the content; the content may now be user specific. It is no longer possible to print a linear format of the document.
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Class 1 - This IETM class follows the structure and format of a printed book, with indexes and table of contents that are hyperlinked into the content of the document. This might be a scanned book with some links
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The functionality of IETMs systems is broken down into six classes. But these classes are more like points in a spectrum of features with most real-world IETM products falling somewhere in between two classes.
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Class 2 - This format includes more hyperlinks than Class I, such as figures, tables and section references. A hyperlinked PDF document is the typical example. The document would be marked up with XML.
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The IETM functionality matrix was first developed by the US Aerospace
Industries Association (AIA) Product Support Committee. It is used in most US military technical data specifications as well as
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through the IETM system. An analogy might be Google search, where search results are improved based on analysis of large data sets of previous queries entered by users.
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The Tri-Service Group also came up with a roadmap that went through to 1997 for revision of the standards and the creation of documentation explaining the standards.
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Navy - 100% of the technicians, experience and inexperienced, found a fault when using electronic material compared to 58% when the technicians used paper manuals
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MIL-Q-87270. Quality
Assurance (QA) Program: Interactive Electronic Technical Manuals (IETMs) and Associated Technical Information, Requirements For.
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Air Force - 100% fault isolation for experience and inexperienced technicians using electronic material compared to 75% success rate when using paper
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far more rapidly than in paper manuals. IETMs came into widespread use in the 1990s as huge technical documentation projects for the
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MIL-M-87268. Manuals, Interactive
Electronic Technical: General Content, Style, Format, and User-Interaction Requirements For.
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the presentation on the screen. Hyperlinking throughout the document is expected. The document would be marked up with XML.
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Class 4 - This class now expects the data to be stored in a relational database, obtaining benefits of
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MIL-D-87269. Data Base, Revisable: Interactive
Electronic Technical Manuals, For The Support Of.
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logistics systems and improve usability of the technical material.
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Other examples of the improvements from IETMs included:
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The Tri-Service group came up with three standards:
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345:. US Navy
316:. US Navy
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162:History
156:defense
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