Provisioning of U.S. Army Equipment - Army Publishing Directorate ...

operational status. This is accomplished using fault isolation and replacement of the failed component. Field maintenance
is synonymous with “on System” and “replace forward.” The Field maintenance level consist of organizational
and selected direct support maintenance capabilities from the legacy systems Four-Level Maintenance (4LM) System.
Sustainment maintenance is focused on repairing components, assemblies, modules and end items in support of the
distribution system. Sustainment maintenance is synonymous with “off System” and “repair rear”). Only an integration
of high reliability engineering and a provisioning plan tailored for two-level maintenance will achieve and maintain the
desired Ao.
Section III
Special Abbreviations and Terms
This section contains no entries.
AR 700–18 20 September 2009
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