R-2A Activity · President's Budget PB2027

ARSR-4 Replacement Hawaii (ARSR4R-HI)

Activity a0·Project 673587 — ARSR-4 Replacement - Hawaii·PE 0604283F·U.S. Air Force
FY2027 Request
$44.2M
▼ 6.6% vs FY2026
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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.

FY2027 Request
$44.2M
▼ 6.6% vs FY2026
FY2026 Enacted
$47.3M
▼ 29% vs FY2025
FY2025 Actual
$66.7M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 673587 of PE 0604283F. This is the budget justification's own description of work that has not happened yet — the one thing no other level of the budget carries.

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: the year under way

Prior-year accomplishments and current-year plans from the same exhibit. Context for the FY2027 plan, not a series — an activity partitions its project exactly in the request year, but can under-cover it in earlier years.

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

Money

Three years, and no five-year plan

An R-2A activity publishes the prior year, the current year and the budget year. The FYDP outyears exist at project and program-element level and are deliberately absent here rather than inferred. Estimate types are colored and never summed into one figure.

2550066.7FY25ACTUAL47.3FY26ENACTED44.2FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual66.7
FY2026Enacted47.3
FY2027Request44.2

This activity is 100% of project 673587's FY2027 request and 100% of PE 0604283F's. In the request year the activities under a project sum to it exactly; in the current year they under-cover it in about 9% of cases, so an activity's delta can legitimately exceed its parent's and the two must not be compared row to row.

Where this sits

1 activity in project 673587

Every R-2A line of this project, largest FY2027 request first. Linked where the activity has enough of its own narrative to carry a page; the rest are shown in full on the program-element page.

ARSR-4 Replacement Hawaii (ARSR4R-HI) — this activity$44.2M ▼ 7%
Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 0604283F, project 673587 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0604283F/673587/a0.md · MCP mcp.hitchintel.combudget_get_activity