Downloaded from https://www.everyspec.com MIL-STD-3001-4(AS) time the task will be completed. Blocks for engine identification number and supervisor and crew member number shall be included at the left of the lower portion. The lower portion shall include provisions that will permit tracking and recording of four engines. 5.3.11 Illustrated parts breakdown data (IPB). IPB data shall be prepared as an integral part of the maintenance tasks (refer to 5.3.11.1) unless specified otherwise by the requiring activity. When specified by the requiring activity, IPB data can be prepared as separate work packages (refer to 5.3.11.2).
5.3.11.1 IPB data prepared as an integral part of the maintenance tasks ipb >. IPB data shall be prepared as an integral part of the maintenance tasks and shall be included after the last maintenance task contained in a maintenance work package. The IPB shall track the maintenance task and include parts provisioned for the applicable maintenance level support of the item. Only those parts necessary to perform the maintenance procedures shall appear on the illustration and be listed in the group assembly parts list (GAPL). IPB data shall consist of an introduction and figure(s). Each IPB figure consists of an illustration and a related GAPL. a. IPB illustration.
Each illustration shall adequately identify and locate repair parts. Multiple-view and multiple-sheet illustrations may be used. All illustrations shall precede the GAPL and, for greater clarity, be integrated with the maintenance procedures. b. IPB GAPL. The GAPL ( standard table ) shall be prepared as a tabular listing of all authorized repair parts for use in the performance of maintenance. Basic top-down breakdown sequence shall not be used in the development of the GAPL data, unless it matches the maintenance task to be performed. The GAPL entries are described in 5.3.11.1.1 through 5.3.11.1.7. c. Master usable on code list.
When usable on codes are needed to reflect multiple application of items in an individual GAPL, a master usable on code list shall be developed and placed at the bottom of the last tabular page of the GAPL (e.g., Effectivity, used to indicate that the item is applicable only after, or before, incorporation of a technical directive and/or specific serial number application). Refer to 5.3.11.1.5 for usable on code requirements. 5.3.11.1.1 Index numbers. The index numbers that appear in the associated supporting illustrations shall appear as an entry under the heading "INDEX NO." in numerical sequence beginning with the number 1.
Index numbers shall be assigned to all parts listed in the GAPL that have maintenance or supply significance, except as otherwise noted herein. Index numbers shall be first assigned to the GAPL and then applied to the IPB illustrations to maintain the proper sequence in the breakdown. If the same part number is listed more than once in the breakdown, it shall be assigned a different index number for each listing. No index number shall be assigned to an assembly when all detail parts are indexed, unless such assembly is also illustrated completely assembled on the illustration. 5.3.11.1.1.1 Index numbers for attaching parts. a. Normally, index numbers shall be assigned to all attaching parts.
b. Fastening groups used at the same location (for example, a relay attached by multiple nuts, bolts, and washers) need not be individually illustrated or identified by index number, unless maintenance significant. When group callouts are used, they shall contain only one particular size, combination, or group of parts. (1) Each size, combination, or group of parts shall be listed separately. 18