# F-35 Integration

**R-2A activity** of project 653133 — Stand In Attack Weapon  
**Program element:** 0207328F — Stand In Attack Weapon  
**Component:** U.S. Air Force · **Budget Activity:** 5  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0207328F/653133/a0  
**Parent:** https://hitchintel.com/programs/0207328F

## Summary

This activity requests $48.9M in FY2027, 42% of project 653133, up 72% 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.** Continue integration of SiAW missile on the F-35 to include: mission planning, establishing a hardware/software lab to develop, test and program mission data files; begin SIL testing with the aircraft platform; continue required ground tests (i.e. wind tunnel tests, ejector rack testing, vibration tests, structural coupling tests, etc.); continue demonstration of hardware compatibility with the platform beyond what can be leveraged by AARGM-ER (physical, mechanical, electrical and environmental) and continue with criteria and demonstration of standards for airworthiness certification.

**FY2026 to FY2027 change.** Funding increased due to transition from initial integration activities, which identify and define requirements, to beginning integration tasks such as software lab testing, Universal Armament Interface development, and expanding required flight sciences and airworthiness efforts beyond what can be leveraged from AARGM-ER.

## Before the request year

**FY2026 plans — current year.** Continued integration of AARGM-ER on the F-35 as an interim combat capability, including ground testing, F-35 operational flight program (OFP) integration, launcher adapter development, mission planning, and flight testing. Began initial integration of the SiAW missile on the F-35, including execution of System Requirements Review to define requirements for and begin mission planning, mission data development, ground testing, and airworthiness activities, and began establishing a System Integration Lab (SIL).

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 34.5 |
| FY2026 | Enacted | 28.4 |
| FY2027 | Request | 48.9 |

> 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 653133

- [Target/Test Assets, Testing, & Support](https://hitchintel.com/programs/0207328F/653133/a2) — FY2027 51.1
- [SiAW Development](https://hitchintel.com/programs/0207328F/653133/a1) — FY2027 15.9

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0207328F project 653133 (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.*