DATA ITEM DESCRIPTION
Title: ENGINEERING DRAWING TREE
Number: DI-DRPR-81961A Approval Date: 20190814
AMSC Number: F10068 Limitation: N/A
DTIC Applicable: No GIDEP Applicable: No
Preparing Activity: 11 (AFLCMC/EZSC) Project Number: DRPR-2019-004
Applicable Forms: N/A
Use/Relationship: The Engineering Drawing Tree identifies the interrelationships of
engineering design data and associated lists that comprise the total engineering Technical
Data Package (TDP) prepared for each system, subsystem, and component configuration.
The Engineering Drawing Tree also aids in the control and development of design data in the
overall project.
a. This Data Item Description (DID) contains the format, content, and intended use
information for an Engineering Drawing Tree resulting from the work task described by 5.14.5
of MIL-STD-31000, Technical Data Packages. (Copies of this document are available online
at https://quicksearch.dla.mil.)
b. This DID supersedes DI-DRPR-81961.
Requirements:
1. Reference documents. The applicable issue of the documents cited herein, including their
approval dates and dates of any applicable amendments, notices, and revisions, shall be as
specified in the contract.
2. Format. The Engineering Drawing Tree shall be structured in top-down breakdown order,
at the lowest level of assembly (i.e., lowest repairable unit) or the lowest component or piece
part. Each artifact of design data included on the Engineering Drawing Tree shall be shown
as an individual block or as an individual entry on the indentured list. Each authorized
variation in configuration of the system, subsystem, and component shall be identified by a
separate tree. The Engineering Drawing Tree shall be either in a block diagram format or an
indentured parts list format as specified in the contract.
2.1. Page one, or its equivalent, shall show the top level system block diagram, depicting the
system’s subsystems or major assemblies, and shall
be used as an index for the detailed
Engineering Drawing Tree that follows.
3. Content. The Engineering Drawing Tree shall identify all system, subsystem, and
component design data to be delivered as part of the TDP and the design data previously
delivered that are applicable to the current program. The Engineering Drawing Tree shall
also include design data as specified in 3.1.18 and 3.1.40 of MIL-STD-31000 to include:
models, 3-Dimensional Intelligent (3Di) viewable, engineering drawings, associated lists,
specifications, standards, quality assurance provisions, packaging details, commercial
drawings, computer software documentation, and Vendor Item Control document (or
specification control document).
3.1 Each block, or indenture item, shall include the following:
a. Document or drawing (or equivalent) number.
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