Aerospace & Defense
MIL-STD-40051-2, The Former Army Page-Based TM Standard, Superseded by MIL-STD-40051E
Overview
What is MIL-STD-40051-2?
MIL-STD-40051-2 was the part of the U.S. Army's technical manual standard governing digital technical information for page-based technical manuals: content structure, style, and format for manuals presented as pages, in print or as electronic page-oriented manuals, organized as work packages. Citations of the form "MIL-STD-40051/2C" refer to this part at Revision C. Its last revision was 40051-2D, amended by Change 1. It was canceled on 25 March 2025 and superseded by MIL-STD-40051E, which covers page-based and interactive manuals in one document.
Where to get the document
Key Features
- Canceled 25 March 2025; superseded by MIL-STD-40051E
- Last revision: 40051-2D with Change 1
- Governed page-based manuals, in print or as electronic page-oriented manuals
- Work package organization from front matter to supporting information
- "/2C" citations refer to this part at Revision C (2015)
Also written as: MIL STD 40051-2 · MIL-STD-40051/2 · MIL-STD-40051-2C · MIL-STD-40051-2D
Who MIL-STD-40051-2 Applies To
MIL-STD-40051-2 was canceled on 25 March 2025 and superseded by MIL-STD-40051E. It still applies where an earlier contract or data item description cites it, and it is the part most legacy Army TM libraries were built against, so it is also where most conversions start. New page-based work should expect Revision E.
Where MIL-STD-40051-2 Programs Go Wrong
- Reading a "/2C" citation as a different standard and quoting against the wrong revision. It is Part 2 at Revision C, and you owe what is cited, even though the part has since been canceled.
- Treating page-based as paper-shaped. The standard governs page-oriented electronic manuals too, and layout decisions made for print bind the electronic output.
- Converting legacy page-based TMs without sampling for the exception structures. The manual authored around them is where conversion budgets go to die.
How It Relates to Other Standards
- MIL-STD-40051
- The current standard, at Revision E since March 2025, which superseded this part.
- MIL-STD-40051-1
- The former IETM sibling, canceled the same day and superseded by the same Revision E.
- MIL-STD-3001
- The naval aviation counterpart to the same page-based problem: frequently confused with this part, and not interchangeable with it.
MIL-STD-40051-2 Questions
What is MIL-STD-40051-2?
The former Part 2 of the U.S. Army's technical manual standard, which governed page-based technical manuals organized as work packages, in print or as electronic page-oriented manuals. It was canceled on 25 March 2025 and superseded by MIL-STD-40051E.
Is MIL-STD-40051-2 still active?
No. DLA's ASSIST database lists it as canceled on 25 March 2025, superseded by MIL-STD-40051E. Its last revision was 40051-2D with Change 1.
What does MIL-STD-40051/2C mean?
It is a citation of Part 2 at Revision C, issued in 2015: a superseded revision of this part, not a separate standard. Contracts cite specific revisions, so a /2C citation means you owe Revision C, even though Part 2 has since been canceled and replaced by MIL-STD-40051E.
What replaced MIL-STD-40051-2?
MIL-STD-40051E, issued 25 March 2025, which merged the page-based and IETM requirements into one standard. Confirm against your contract: the cited revision governs, not the newest one.
Where to Get MIL-STD-40051-2
Canceled, but still available from ASSIST Quick Search, the DLA's repository of record, for programs that cite it. For new work, download MIL-STD-40051E from the same place.
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