RDT&E Project · President's Budget PB2027

RC-135 (Airborne SIGINT Development - RC-135 Rivet Joint)

Project 675180·PE 0304260F — Airborne SIGINT Enterprise·U.S. Air Force·BA7
FY2027 Request
$28.6M
▼ 32% vs FY2026
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Project 675180 — RC-135 (Airborne SIGINT Development - RC-135 Rivet Joint) requests $28.6M in FY2027, 29% of the $98.3M requested for program element 0304260F, down 32% on FY2026. 1 R-2A activity decomposes the request. L3Harris is the largest named R-3 performer at $28.6M, 100% of the project's FY2027 R-3 total.

FY2027 Request
$28.6M
▼ 32% vs FY2026
FY2026 Enacted
$41.9M
▼ 0.1% vs FY2025
FY2025 Actual
$41.9M
Prior year
Project detail

What project 675180 buys

This project supports design, engineering analysis, non-recurring engineering, development, test, and integration of RC-135 SIGINT sensor capabilities and their associated air and ground components. By extensively utilizing commercial-off-the-shelf (COTS) based solutions to field needed capabilities, this project must continuously identify suitable replacements for components affected by Diminishing Manufacturing Sources and integrate with the COTS technology cycle. These efforts provide required engineering for preliminary assessments of technical feasibility, operability, or military utility as well as specific engineering implementations integrated into the various baseline modifications. Funding also supports innovation activities to include studies, analyses, requirements definition, and quick-reaction capability prototypes/demonstrations to accelerate planning for technology transition, technology insertion and future acquisition programs. These funds will be disbursed among the RC-135V/W RIVET JOINT, the RC-135U COMBAT SENT, and the RC-135S COBRA BALL programs. Funding reflects the SIGINT Capabilities Working Group (SCWG) priorities and the accomplishment of other Airborne SIGINT Enterprise initiatives.

R-3 lines of work
  • Product Development
Funding trajectory

Project 675180 funding, 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. Projects carry the full five-year plan; the activities inside them stop at the budget year.

25041.9FY25ACTUAL41.9FY26ENACTED28.6FY27REQUEST30.6FY2831.6FY2932.5FY3033.4FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual41.9
FY2026Enacted41.9
FY2027Request28.6
FY2028Outyear30.6
FY2029Outyear31.6
FY2030Outyear32.5
FY2031Outyear33.4
Inside the project

1 accomplishment / planned program

The R-2A exhibit — the only level of the budget that describes work that has not happened yet. Activities carry the prior, current and budget year only, no five-year plan. Each describes FY2027 work in enough detail to have its own page; the rest are shown here in full. Coverage is partial across the corpus, so count activities, never total them.

FY2025 actual$41.9M
FY2026 enacted$41.9M
FY2027 request$28.6M

- Will Deliver 9/3 capabilities for Baseline 15/16, continue 4 efforts for Baseline 16 and begin 4 new efforts for baseline 16. -Will continue SIGINT development efforts for the RC-135 fleet to include new signal sets and upgrades to current capabilities. See PE 0305207F for classified details. Classified requirements POC is HAF AF/A2OO…

Read the FY2027 plan →
Who's building it

Named performers on project 675180

Performers named in the R-3 exhibit under this project. Share is of the project's whole FY2027 R-3 total — the same denominator the program-element split uses, so the two read on one scale and will not sum to 100% when unnamed or government work is in the mix. Budget-justification contract funding, not obligations.

L3Harris
$28.6M · 100%