text: Chapter 8
  8-31. An ADA task-organized battery deploys with the ability to sustain itself for 72 hours; after that, it
  requires external support from higher headquarters or other support systems in general. The ADA task-
  organized battery employs the Army’s two-level maintenance system, consisting of field maintenance and
  sustainment maintenance. Field maintenance is characterized by on-system maintenance − repair and return
  to user − while sustainment maintenance is off-system maintenance – repair and return to supply.
  8-32. The ADA task-organized battery commander should be familiar with the diagnostic mandatory parts
  list, as the Department of the Army’s approved supply support method for ADA systems. Its purpose is to
  maintain the highest possible state of readiness through diagnosis and repair of faults in non-mission capable
  equipment and to ensure availability of combat/mission essential assets at or near the firing battery to
  preclude extended downtime for lack of repair parts. The basic objective is to authorize stock of essential
  diagnostic and repair/replacement parts that may not otherwise be authorized based on demands. If the end
  item is found to be non-mission capable, the diagnostic mandatory parts list item will be used to repair the
  piece of equipment and a replacement part for the list will be put on order. Parts carried on the list will be
  used as required in peacetime operations. Replenishment will be on an as-used basis. Some ADA repair parts
  are classified and require the appropriate level of security for transport and storage.
  8-33. The ADA task-organized battery commander is responsible for all administrative and logistical
  functions within the ADA task-organized battery, supported by the executive officer, supply NCOs, system
  and conventional technicians, and, in most cases, system-specific or conventional maintenance warrant
  officers. The executive officer is responsible for supply, maintenance, services, and transportation of unit
  personnel and equipment and should organize and take advantage of all assets available. The executive officer
  is typically charged with bridging unit sustainment and logistics with the commander’s intent. Some materiel
  readiness functions that the executive officer must coordinate are:
  * Apprising the commander of materiel readiness.
  * Providing assistance to the platoon leaders on materiel readiness problems.
  * Providing liaison with higher headquarters and outside agencies regarding materiel readiness.
  * Forecasting logistical requirements and support requests during combat. The executive officer
  concentrates on seven classes of supply: classes I, II, III, IV, V, VII, and IX. The executive officer
  and supply NCO coordinate the requisition, receipt, preparation, and delivery of classes I, III, and
  V.
  8-34. The executive officer works with the system warrant officer, NCOs, and Soldiers to ensure unit
  sustainment supports the unit mission. In a typical ADA battery, the warrant officer is responsible for
  ensuring system sustainment requirements for the unit are met. The warrant officer accomplishes this through
  expertise in Army logistics and sustainment, through assigned NCOs and Soldiers, and by ensuring that
  officers in the unit are fully advised of the employment capability of the weapon system. The warrant officer
  and maintenance NCOs also coordinate with other units and higher headquarters to ensure ADA unique parts
  and supplies are available to maintain the best possible mission-capable posture.
  8-35. The ADA task-organized battery commander is responsible for the operator/crew maintenance
  functions in the unit. The commander leverages the senior maintainers’ technical expertise on all aspects of
  the maintenance mission, including diagnostics and troubleshooting to isolate faults and expedite the repair
  and return of systems to operation.
  8-36. The battery commander can ensure flexibility by tailoring methods of sustainment and should not allow
  the organization to be bound by traditional support methods. The commander must know the logistical
  requirements of the battery and the details of operation plans, and devise innovative ways to support the plans
  and reduce risks. The ADA task-organized battery must be flexible enough to obtain support from any base
  arrangement and accomplish its mission.