# F-15EX Development & Test

**R-2A activity** of project 670131 — F-15EX  
**Program element:** 0207146F — F-15EX  
**Component:** U.S. Air Force · **Budget Activity:** 7  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0207146F/670131/a1  
**Parent:** https://hitchintel.com/programs/0207146F

## Summary

This activity requests $74.0M in FY2027, 55% of project 670131, up 37% 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 cybersecurity test events. Continue non-recurring engineering (NRE) and integration development efforts, including continued Flight Control Computer (FCC) and other DMSMS redesign development needed to continue production line deliveries. Continue software development integration efforts, including merging F-15EX-unique software into the common F-15 OFP. Continue upgrading existing F-15 training systems and systems integration labs for F-15EX-unique capabilities. Provide program support to manage and execute F-15EX efforts. Long-Range Kill Chain (LRKC) development and integration efforts require updates to the Operational Flight Program.

**FY2026 to FY2027 change.** FY27 funding has increased due to requirement ramp up in Long Range Kill Chain.

## Before the request year

**FY2026 plans — current year.** Continue cybersecurity test events. Continue non-recurring engineering (NRE) and integration development efforts, including continued Flight Control Computer (FCC) and other DMSMS redesign development needed to continue production line deliveries. Continue software development integration efforts, including merging F-15EX-unique software into the common F-15 OFP. Continue upgrading existing F-15 training systems and systems integration labs for F-15EX-unique capabilities. Provide program support to manage and execute F-15EX efforts. Long-Range Kill Chain (LRKC) development and integration efforts require updates to the Operational Flight Program.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 54.9 |
| FY2026 | Enacted | 54.0 |
| FY2027 | Request | 74.0 |

> 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 670131

- [Hybrid SATCOM](https://hitchintel.com/programs/0207146F/670131/a0) — FY2027 45.2
- [Open Mission Systems](https://hitchintel.com/programs/0207146F/670131/a2) — FY2027 14.1

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0207146F project 670131 (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.*