RDT&E Program Element · President's Budget PB2027

F-15EX

PE 0207146F·U.S. Air Force·Approp. 3600 — RDT&E·BA7 — Operational System Development
FY2027 Request
$133.3M
Air Force · RDT&E
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U.S. Air Force requests $133.3M in FY2027, sustained across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators added 111% (to $281.1M). Boeing leads the industry work.

FY2027 Request
$133.3M
▲ 13% vs FY2026
FY2026 Enacted
$117.7M
▲ 115% vs FY2025
FY2025 Actual
$54.9M
Prior year

For fiscal year 2027, the U.S. Air Force is requesting $133.3M for F-15EX under RDT&E program element 0207146F, up 13% over FY2026.

Funding trajectory

Funding profile, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure.

100200300054.9FY25ACTUAL117.7FY26ENACTED133.3FY27REQUEST143.4FY28238.1FY29249.9FY30358.5FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual54.9
FY2026Enacted117.7
FY2027Request133.3
FY2028Outyear143.4
FY2029Outyear238.1
FY2030Outyear249.9
FY2031Outyear358.5
Where it sits

Acquisition lifecycle

This program is funded in RDT&E Budget Activity 7 — Operational System Development.

Complete
Research
BA 1–2
Complete
Advanced Technology
BA 3
Complete
Prototyping
BA 4
Current
Development & Fielding
BA 5–7
Inside the program element

1 project rolls up into PE 0207146F

Projects are the summable leaves — the PE total is their sum, never added to it. Program elements and projects carry the full five-year plan; activities stop at the budget year. This PE moves 13% overall, which can hide much larger swings below.

Project 670131

F-15EX

$133.3MFY2027 request ▲ 13%
FY2025 actual$54.9M
FY2026 enacted$117.7M
FY2027 request$133.3M
Product DevelopmentSupportTest and EvaluationManagement Services

The F-15EX is a new multirole-capable fighter jet based on the 2-seat F-15QA (Qatar) configuration upgraded with advanced capabilities, including the Eagle Passive Active Warning Survivability System (EPAWSS) and the USAF F-15 Continuous Delivery & Integration (CD&I) Operational Flight Program (OFP) software. The F-15EX provides significant operational flexibility, enabling it to perform a wide range of missions sets with one or two aircrew. It will be used predominantly in defensive and offensive counter-air missions at both Air National Guard (ANG) and Air Combat Command (ACC) operational squadrons. F-15EX will perform the Homeland Defense mission and provide Combatant Commanders (CCDR) with strike packages capable of operating in Highly Contested Environments (HCE). The FY 2027 RDT&E funding request continues incremental funding of development and test activities started in prior years, including for Long-Range Kill Chain (LRKC) and Hybrid SATCOM (Beyond Line-of-Sight communications) development, which was an FY 2026 new start. This program element may include necessary civilian pay expenses required to manage, execute, and deliver weapon system capability. The use of such program funds would be in addition to the civilian pay expenses budgeted in program element 0605829F, 0605831F, 0605833F or 0605898F. FY 2020 Prior Years RDT&E funding of 385.000 million was executed in Program 0207134F (F-15E Squadrons) and is not included in this exhibit. FY 2020 RDT&E funded two F-15EX test aircraft. In FY 2021, F-15EX RDT&E efforts were continued in Program 0207146F (F-15EX). The FY 2026 spend plan amount for F-15EX 3600 includes $117,715 thousand of discretionary and $40,000 thousand of mandatory (reconciliation) for a total of $157,715 thousand. Program RDT&E funding may be utilized to implement innovation insertion, capability insertion, software increments, spiral upgrades, modular component swaps, and other insertions consistent with Modular Open System Architecture. Program RDT&E funding may be utilized to design, develop, integrate, and test weapon system and/or component level open architectures. Program RDT&E funding may be utilized to fund the concept refinement, design, development, integration, and testing of interdependent technologies and common architectures that underpin weapon system and portfolio-wide mission outcomes.

Accomplishments / planned programs (R-2A) — prior, current and budget year only
FY2025 actual$0.0M
FY2026 enacted$13.7M
FY2027 request$45.2M

Continue non-recurring engineering (NRE) and integration development efforts on multiple contracts to develop and integrate multi-band apertures and terminals with aircraft systems. Modify aircraft software (Operational Flight Program) to enable integration and data sharing in accordance with DAF Battle Network architecture leveraging…

Read the FY2027 plan →
FY2025 actual$54.9M
FY2026 enacted$54.0M
FY2027 request$74.0M

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…

Read the FY2027 plan →
FY2025 actual
FY2026 enacted$0.0M
FY2027 request$14.1M

Continue non-recurring engineering (NRE) and integration development efforts on multiple contracts to develop and integrate open mission systems / multi-function processor (OMS/MFP) with aircraft systems to allow capability to alleviate current ADCP II constraints.

Read the FY2027 plan →
Congressional action

Congressional marks

Committee marks on the FY2027 request. Adds and cuts are reconciled in conference before they become law.

RequestPresident's Budget
$133.3M
House NDAA (HASC)HASC
$133.3M full · +$0
Senate NDAA (SASC)SASC
$133.3M full · +$0
House Approps (HAC-D)HAC_D
$281.1M +$147.8M · +111%
▲ $147.8M chamber gap — unresolved as of 2026-07-27. These are FY2027 authorization marks (NDAA); appropriations and the conference agreement may differ.
Who's building it

Where the FY2027 request goes

Performers named in the R-3 exhibit, resolved into industry, government-lab, and unspecified shares. Budget-justification contract funding, not obligations.

Boeing
$62.5M · 47%
F-15EX Development
AFLCMC CIV PAY
$6.6M · 5.0%
Direct Cite Authority Civilian Pay
Where FY2027 funding flowsShare$M
Industry primes52%69.1
Other / unspecified48%64.1
FY2027 request100%133.3
See Boeing's full federal contract ledger members
Program detail

Mission & acquisition strategy

The F-15EX is a new multirole-capable fighter jet based on the 2-seat F-15QA (Qatar) configuration upgraded with advanced capabilities, including the Eagle Passive Active Warning Survivability System (EPAWSS) and the USAF F-15 Continuous Delivery & Integration (CD&I) Operational Flight Program (OFP) software. The F-15EX provides significant operational flexibility, enabling it to perform a wide range of missions sets with one or two aircrew. It will be used predominantly in defensive and offensive counter-air missions at both Air National Guard (ANG) and Air Combat Command (ACC) operational squadrons.

The Air Force initiated the F-15EX program under the Middle Tier of Acquisition (MTA) Pathway to rapidly field aircraft, meeting the urgent requirement to recapitalize the divesting of the F-15C and F-15D fleet. In September 2022, the F-15EX program transitioned to a Major Capability Acquisition (MCA) Pathway program to enable procurement of Lots 3 and beyond. As part of this transition, all assets and activities transitioned to the new Major Capability Acquisition program.

Project 670131 — F-15EX
  • Product Development
  • Support
  • Test and Evaluation
  • Management Services
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Answers are generated from the figures on this page — the FY2027 justification exhibits and the marks tracked above — and nothing else is consulted. Confirm any figure against the cited exhibit before you use it externally.

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Questions this page can answer
How does the FY2027 request compare with FY2026, and what does the five-year plan show?What did the FY2027 NDAA committees do to this request?How is the FY2027 request split between industry and government performers?In plain terms, what is this program element for and how is it being acquired?

This page carries the budget justification and the NDAA marks — nothing else. For what Boeing has actually been obligated, the ledger is at hitchintel.com/vendors; for live solicitations, hitchintel.com/opportunities. Both are member surfaces.

Provenance

Cite this page

Sources
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 0207146F (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "F-15EX (PE 0207146F)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0207146F
Machine access
Markdown twin /programs/0207146F.md · MCP mcp.hitchintel.combudget_get_program_element, budget_get_cong_marks