# Multi-Domain Sensing System (MDSS) Adv Dev — Program Element 0604036A

**Program element:** 0604036A  
**Component:** U.S. Army  
**Appropriation:** 2040 — RDT&E, Army  
**Budget Activity:** 4 — Advanced Component Development & Prototypes  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604036A

## Summary

U.S. Army funding falls 60% to a $99.5M request in FY2027 (down from a FY2026 peak), before stepping down 99% across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators added 20% (to $119.5M).

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 188.2 |
| FY2026 | Enacted | 249.2 |
| FY2027 | Request | 99.5 |
| FY2028 | Outyear | 39.8 |
| FY2029 | Outyear | 1.0 |
| FY2030 | Outyear | 1.0 |
| FY2031 | Outyear | 1.0 |

> Estimate types are not summed — the profile mixes actuals, enacted law, the request, and outyear projections.

## Congressional marks (FY2027)

| Stage | Marked ($M) | Change ($M) |
|---|---|---|
| Request | 99.5 | — |
| House NDAA (HASC) | 99.5 | +0.0 |
| Senate NDAA (SASC) | 99.5 | +0.0 |
| House Approps (HAC-D) | 119.5 | +20.0 |

> FY2027 NDAA authorization marks, as of 2026-07-27. Not appropriations or final law.

## Projects (1)

| Project | Title | FY2025 actual | FY2026 enacted | FY2027 request | Move |
|---|---|---|---|---|---|
| DD6 | HADES Platform, Payloads/PED, and Integration | 188.2 | 249.2 | 99.5 | −60% |

> Projects are the summable leaves: the program element total is their sum, never added to it.

### Project DD6 — HADES Platform, Payloads/PED, and Integration

PE 0604036A / Project DD6 is the Army's first priority in the MDSS portfolio of systems and is the centerpiece of the A-ISR transformation strategy. HADES is a commercial jet modified for military use with complex OML aerodynamic modifications and integrated with sensors which provide COMINT, ELINT, and SAR/MTI (i.e. RADAR) capabilities, ASE, and other military mission equipment utilizing open system standards. HADES allows the Army to fly higher, faster, and farther, which directly impacts the warfighter's ability to see and sense deeper, delivering an organic capability in line with the Army's operational imperative for deep sensing. In FY 2027 Prototype #2 and #3 aircraft are concurrently being developed as prototype #1 will deliver in FY 2026. These three developmental prototypes will inform future Army procurement decisions. HADES provides advanced aerial intelligence sensing capabilities for Multidomain Operations (MDO) against peer and near-peer adversaries, addressing Army deep sensing needs in all phases of operations and throughout the depth of the future battlefield. With higher airspeed, range and endurance, HADES will facilitate A-ISR coverage for a much larger geographical area than current capability and will facilitate global deployment within days instead of the current transitional period of several weeks for legacy aircraft. This will adversely affect our adversaries' ability to plan and maneuver. This is also aligned with the Headquarters Department of the Army Deputy Chief of Staff (HQDA DCS) G2 strategy that lethality begins with intelligence. HADES provides highly mobile, long endurance converged deep sensing through the collection of COMINT, ELINT, and SAR/MTI data. Subsequent increment upgrades can host Electronic Warfare (EW), Radio Frequency (RF)-enabled Cyber, and Launched Effects (LE) as well as additional system improvements. Aircraft performance and a Modular Open Systems Approach (MOSA) increases flexibility in rapid global deployment and postures to meet emerging operational needs. The total cost of the HADES Middle Tier of Acquisition (MTA) Rapid Prototyping (RP) # 1 effort is $473.5 million RDT&E from FY 2024 to FY 2027. Details provided under separate cover.

## Mission & acquisition strategy

PE 0604036A / Project DD6 is the Army's first priority in the Multi Domain Sensing System (MDSS) portfolio of systems and is the centerpiece of the Army's Aerial Intelligence, Surveillance, and Reconnaissance (A-ISR) transformation strategy. High Accuracy Detection and Exploitation System (HADES) is a commercial jet modified for military use with complex Outer Mold Line (OML) aerodynamic modifications and integrated with sensors which provide Communications Intelligence (COMINT), Electronics Intelligence (ELINT), and Synthetic Aperture Radar/Moving Target Indicator (SAR/MTI) (i.e.

## Related program elements

- [0305219A — MQ-1 Gray Eagle UAV](https://hitchintel.com/programs/0305219A) (Army)
- [1203173SF — R&D Space & Missile Operations](https://hitchintel.com/programs/1203173SF) (Space Force)
- [0604007F — E-7A](https://hitchintel.com/programs/0604007F) (Air Force)
- [1203155SF — Ground Moving Target Indicator](https://hitchintel.com/programs/1203155SF) (Space Force)

## Source & machine access

- **Source:** FY2027 Department of the Army RDT&E Budget Justification, Exhibits R-2/R-3, PE 0604036A (PB PB2027); FY2027 NDAA committee marks (as of 2026-07-27).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604036A")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*