# Mission Systems

**R-2A activity** of project 3051 — E-2D Adv Hawkeye  
**Program element:** 0604234N — Advanced Hawkeye  
**Component:** U.S. Navy · **Budget Activity:** 5  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604234N/3051/a1  
**Parent:** https://hitchintel.com/programs/0604234N/3051

## Summary

This activity requests $284.0M in FY2027, 73% of project 3051, up 32% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** Complete transition of DSSC 5 Sensor Netting, Data Fusion, and Global Lightning integration effort to the E-2D fleet. Continue E-2D DSSC-6/Block II development of Flight and Mission computer hardware, National Technical Means (NTM), Open Mission Systems (OMS), and other associated obsolescence mitigation technical refresh efforts. Continue upgrade of developmental test aircraft, build-out of full-fidelity Systems Integration Lab (SIL) and conduct SIL Final Qualification Testing (FQT). Provide support of software development environments and integration labs required for E-2D software and hardware configurations. Systems engineering will support ongoing and emergent analysis and design/development/test efforts required to identify Engineering Change Proposal (ECP) requirements to respond to evolving and emergent threats to mission systems, communications systems, navigation equipment and countermeasures. Continue to support Advanced Development efforts to demonstrate and evaluate new hardware and software capabilities for future aircraft integration. Evaluate future capability expansions via studies and analyses.

**FY2026 to FY2027 change.** Increase from FY2026 to FY2027 of $68.028 million due to ramp up of DSSC-6 Hardware development post Critical Design Review (CDR).

## Before the request year

**FY2026 plans — current year.** Continue developmental and integration efforts for DSSC-5 Sensor Netting, and transition DSSC 5 Sensor Netting second incremental build to E-2D Fleet. Continue DSSC-5 Data Fusion integration effort for fielding to the E-2D fleet. Continue DSSC-5 CEC and SDP software and hardware efforts. Continue DSSC-6 HECTR development. Continue development efforts for DSSC-6 TCID, to include Mission computer and Display hardware, National Technical Means (NTM), Open Mission Systems (OMS) and Multi-level Security architecture, and Communication as a Service (CaaS). Provide support of software development environments and integration labs required for E-2D software and hardware configurations. Systems engineering will support ongoing and emergent analysis and design/development/test efforts required to identify Engineering Change Proposal (ECP) requirements to respond to evolving and emergent threats to mission systems, communications systems, navigation equipment and countermeasures. Continue to support Advance Development efforts to demonstrate and evaluate new hardware and software capabilities for future aircraft integration. Evaluate future capability expansions via studies and analyses.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 187.5 |
| FY2026 | Enacted | 215.9 |
| FY2027 | Request | 284.0 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Other activities in project 3051

- [Integration, Test, and Training](https://hitchintel.com/programs/0604234N/3051/a2) — FY2027 95.3
- [Air Vehicle](https://hitchintel.com/programs/0604234N/3051/a0) — FY2027 11.0
- Classified DSSC Support — FY2027 0.0

## Source & machine access

- **Source:** FY2027 Department of the Navy RDT&E Budget Justification, Exhibit R-2A, PE 0604234N project 3051 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

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