IETM

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An IETM or Interactive Electronic Technical Manual is a portal to manage technical documentation. IETMs compress volumes of text into just CD-ROMs or online pages which may include sound and video, and allow readers to locate needed information far more rapidly than in paper manuals. IETMs came into widespread use in the 1990s as huge technical documentation projects for the aircraft and defense industries.

Contents

History

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 logistics systems and improve usability of the technical material.

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 (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. [1] 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. [1] [2]

Other examples of the improvements from IETMs included:

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 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. [2] 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.

The Tri-Service group came up with three standards:

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. [2]

Classes

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.

IETM Functionality Matrix

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 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.

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 S1000D, the international IETM standard.

See also

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References

  1. 1 2 "IETM: From Research to Reality" (PDF). US Navy. Retrieved 2010-12-16.[ permanent dead link ]
  2. 1 2 3 "The Interactive Electronic Technical Manual" (PDF). US Navy. Retrieved 2010-12-16.[ permanent dead link ]