# ARSR-4 Replacement Hawaii (ARSR4R-HI)

**R-2A activity** of project 673587 — ARSR-4 Replacement - Hawaii  
**Program element:** 0604283F — ARSR-4 Replacement - Hawaii  
**Component:** U.S. Air Force · **Budget Activity:** 7  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604283F/673587/a0  
**Parent:** https://hitchintel.com/programs/0604283F

## Summary

This activity requests $44.2M in FY2027, 100% of project 673587, down 6.6% 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 gap analysis considering Golden Dome of America (GDA) capability - Reassess technical solution to meet Air Traffic Control surveillance and Air Domain Awareness - Begin system procurement for Mt Ka'ala site - Continue to collaborate with GDA by sharing Preliminary Design Review (PDR) and tech demo data from prior year development effrorts

**FY2026 to FY2027 change.** Funding decrease due to change in requirements.

## Before the request year

**FY2026 plans — current year.** - Site design and preparation efforts ongoing - Preliminary Design review with each vendor - Collaborating with the Golden Dome for America Direct Reporting Program Manager's Office with respect to the defense of Hawaii

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 66.7 |
| FY2026 | Enacted | 47.3 |
| FY2027 | Request | 44.2 |

> 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.

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0604283F project 673587 (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.*