R-2A Activity · President's Budget PB2027

VC-25B Engineering and Manufacturing Development (EMD), Product Support, & Program Support Costs (PSC)

Activity a0·Project 655250 — VC-25B·PE 0401319F·U.S. Air Force
FY2027 Request
$531.9M
▼ 9.4% vs FY2026
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This activity requests $531.9M in FY2027, 96% of project 655250, down 9.4% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$531.9M
▼ 9.4% vs FY2026
FY2026 Enacted
$587.0M
▲ 40% vs FY2025
FY2025 Actual
$418.5M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 655250 of PE 0401319F. 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

Continuation of EMD activities, aircraft modification, and DT&E transition planning and implementation as well as continue product support activities to include but not limited to heavy maintenance and compliance planning/implementation, initial spares, support equipment, technical order publications, and airworthiness directives.

FY2026 to FY2027 change

Funding decreased due to ramp down of EMD activities, product support and PSC as the program transitions to DT&E.

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

Continue EMD activities, aircraft modification, and transition to Developmental Test and Evaluation (DT&E) as well as continue product support activities to include but not limited to heavy maintenance and compliance planning/implementation, initial spares, support equipment, technical order publications, and airworthiness directives.

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.

1503004500418.5FY25ACTUAL587.0FY26ENACTED531.9FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual418.5
FY2026Enacted587.0
FY2027Request531.9

This activity is 96% of project 655250's FY2027 request and 96% of PE 0401319F'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

2 activities in project 655250

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.

VC-25B Engineering and Manufacturing Development (EMD), Product Support, & Program Support Costs (PSC) — this activity$531.9M ▼ 9%
VC-25B Government Test$23.3M ▲ 208%
Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 0401319F, project 655250 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0401319F/655250/a0.md · MCP mcp.hitchintel.combudget_get_activity