DA Form 5666 Guide: How to Fill & PDF Download

DA Form 5666 Guide: How to Fill & PDF Download – U.S. Army units receiving new or modernized equipment rely on DA Form 5666, officially titled Gaining Command Fielding Evaluation, as a critical post-fielding feedback tool. This form ensures that the Total Package Fielding (TPF) process runs smoothly, identifies any gaps in coordination or support, and helps improve future equipment fieldings across the force.

If you’re a commander, property book officer (PBO), G-4/S-4 logistician, or part of a gaining unit preparing for or recently receiving new systems under the Regionally Aligned Readiness and Modernization Model (ReARMM), this guide explains everything you need to know about DA Form 5666 in 2026.

Table of Contents

What Is DA Form 5666?

DA Form 5666 is the U.S. Army’s standardized form for evaluating the fielding of materiel systems to gaining commands and units. It documents how well the pre-fielding coordination and actual fielding operations met requirements for support, logistics, training, and handoff.

Proponent: Assistant Secretary of the Army for Acquisition, Logistics, and Technology (ASA(ALT))
Prescribed by: AR 770-2, Materiel Fielding (16 July 2021) — the current regulation that replaced the older AR 700-142
Latest version: April 2022 (previous editions are obsolete)
Form purpose: Provide candid, documented feedback from the gaining unit to the Materiel Developer (MATDEV) and Gaining Command (GC) headquarters so issues can be corrected and future fieldings improved.

The form is one page and uses a simple YES/NO/N/A checklist format with space for narrative comments on any “NO” answers.

Why DA Form 5666 Matters in the Army Equipping Process?

Modernization is a top Army priority. When a unit receives new end items, support equipment, Basic Issue Items (BII), tools, test equipment, and technical manuals, the fielding must be seamless. DA Form 5666 captures:

Whether the Materiel Fielding Plan (MFP) and coordination meetings happened on time
Quality of joint supportability assessments
Availability of all required logistics support at handoff
Any delays or shortfalls that affected readiness

Completed forms are sent within 30 days of fielding through command channels to the Gaining Command headquarters and the MATDEV. This feedback loop supports continuous improvement in the Army’s equipment distribution and sustainment processes.

Who Completes DA Form 5666 and When?

Who: The gaining unit (typically the commander or designated representative, often with input from the PBO, supply sergeant, and NET/DET trainers)
When: After the fielding event and handoff are complete — but no later than 30 days after fielding
For what: Every system fielding under TPF (most major equipment fieldings)

Medical materiel (Class VIII) follows slightly different routing to USAMRDC, but the form itself remains the same.

Step-by-Step: How to Fill Out DA Form 5666?

Here’s exactly what each block asks for (based on the current April 2022 version):

Header – “For Fielding Of”

System Name
System Model No.
LIN (Line Item Number)
NSN (National Stock Number)
Fielding Date (YYYYMMDD)

Gaining Unit Information

Gaining Unit DODAAC and UIC
Typed Name of Unit Commander
Signature
Evaluation Date (YYYYMMDD)
Mailing Address / DSN Number

PART I – PREFIELDING COORDINATION (Check YES, NO, or N/A for each)

1. Was the final MFP provided 8 months prior to fielding?
1. Was a fielding coordination meeting conducted at 7 months prior to fielding?
  a. Was a coordination package/checklist provided and signed?
  b. Was a materiel requirements list provided?
1. Was a joint supportability assessment conducted? (If yes, when?)
1. Were final deprocessing, inventory, and handoff sites and schedules verified? (When?)
1. Was the fielding delayed for any reason? (If yes, explain)

PART II – FIELDING OPERATIONS AND LOGISTIC SUPPORT

1. Support and Test Equipment
  a. Were all prescribed special and general purpose tools and test equipment available/provided?
  b. Were prescribed TPS and OSE available/provided?
1. Supply Support: Were the following MRL items provided as agreed?
  (1) All end items including ASIOE and maintenance float?
  (2) All components of the end items and BII?
  (3) All spare/repair parts and special mission kits?
  (4) Starter set of TMs, accounting documents, and instructions?

Block 18: Comments for “NO” answers (use additional sheets if needed)

The unit commander signs the form, certifying the evaluation.

Pro Tips for Accurate and Compliant Completion

Be factual and specific in “NO” comments — this drives real fixes.
Involve the entire fielding team (PBO, maintenance, supply, training) before the commander signs.
Keep a copy for unit records before submitting through command channels.
Always download the latest version directly from the Army Publishing Directorate (APD) — never use outdated templates.

Download Official DA Form 5666 PDF

Direct official link (April 2022 version – current as of 2026):
Download DA Form 5666 – Gaining Command Fielding Evaluation PDF

Bookmark the Army Publishing Directorate forms page for future updates.

AR 770-2, Materiel Fielding (16 Jul 2021)
DA PAM 770-2, Procedures for Materiel Fielding
Leader’s Guide to Equipment Fielding (Jan 2025) – excellent reference for commanders and logisticians
DA Form 5682 (Materiel Requirements List) and other TPF supporting forms

DA Form 5666 is more than paperwork — it’s your unit’s official voice in the Army’s modernization process. Accurate, timely submissions help ensure the next unit receives better support and that America’s soldiers get the equipment they need, when they need it, with full sustainment.

If your unit is scheduled for an upcoming fielding or you just completed one, download the form today and complete it within the 30-day window.

Questions about DA Form 5666? Contact your G-4, MATDEV fielding team, or your local Logistics Assistance Representative (LAR). Always refer to the most current Army regulations and the official APD download link above.