# Project 674807 — EC-37B Compass Call

**Program element:** 0207253F — Compass Call  
**Project:** 674807  
**Component:** U.S. Air Force  
**Appropriation:** 3600 — RDT&E, Air Force  
**Budget Activity:** 7 — Operational System Development  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0207253F/674807  
**Parent:** https://hitchintel.com/programs/0207253F

## Summary

Project 674807 — EC-37B Compass Call requests $25.6M in FY2027, 39% of the $66.5M requested for program element 0207253F — a new start, with no prior-year and no current-year money. 1 R-2A activity decomposes the request, 1 new this cycle. BAE Systems is the largest named R-3 performer at $25.2M, 98% of the project's FY2027 R-3 total.

**Markets:** Airborne Electronic Warfare — matched on the project title only, and no market size is quoted.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 0.0 |
| FY2027 | Request | 25.6 |
| FY2028 | Outyear | 51.3 |
| FY2029 | Outyear | 57.9 |
| FY2030 | Outyear | 74.0 |
| FY2031 | Outyear | 81.7 |

> Estimate types are not summed. This project is one leaf of PE 0207253F; the PE total is the sum of its projects, never added to them.

## What project 674807 buys

Compass Call is the Air Force's wide-area, standoff, Airborne Electromagnetic Attack (AEA) Command and Control Warfare/Information Operations (C2W/IO) weapon system. The employment of this weapon system interrupts the adversary's use of the electromagnetic battlespace and is a key active component in the information battlespace and prosecution of current ground and airborne threats. Compass Call's sophisticated electromagnetic attack system is capable of surgical denial and/or disruption of adversary Radio Frequency (RF) communications, radar and sensor systems. Due to rapid advances in Electromagnetic Attack (EA) techniques and technology, Compass Call is designed to be adaptable, making it well-suited for a continuous modernization strategy. Such a strategy ensures Compass Call techniques evolve at a pace capable of addressing adversary tactics and emerging technologies. The Compass Call weapon system is continuously improved using a rapid development and acquisition process supporting a spiral baseline upgrade strategy. User needs and technology insertion opportunities are continuously reviewed. As a result of technology refresh initiatives, including incorporation of open architectures, "plug and play” systems, software defined radios, and modular software development, Compass Call is implementing agile processes to support weapon system development activities. In FY 2017, the Compass Call re-host program was initiated prompting transition of mission capabilities from the legacy EC-130H airframe to an EA-37B airframe. The re-hosted Compass Call platform is based on a commercial derivative G550 aircraft holding Federal Aviation Administration (FAA) Supplemental Type Certificates (STCs) for airworthiness. The platform will undergo modifications to host Compass Call's Prime Mission Equipment (PME) and antenna arrays and will receive additional STCs and Military Type Certificates (MTCs). The EA-37B aircraft will re-use PME from the EC-130H aircraft that will be upgraded to the latest Baseline. Due to the age of the EC-130H fleet, re-hosting of the PME is crucial to ensuring the longevity of this critical capability. In an effort to put capability into the warfighter's hands as soon as possible, the EA-37B program pursues concurrent developmental and production activities.

**R-3 lines of work:** Product Development; Support.

## Named R-3 performers

| Performer | $M | Share of this project's FY2027 R-3 total |
|---|---|---|
| BAE Systems | 25.2 | 98% |

> Budget-justification contract funding, not obligations. Shares need not reach 100% — unnamed and government work is in the denominator.

## Activities (R-2A) — 1

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| Baseline 5 and Future Spiral Baseline Upgrade Development | — | — | 25.6 | new | [a0](https://hitchintel.com/programs/0207253F/674807/a0) |

> Activities carry the prior, current and budget year only — no five-year plan. In the request year they partition this project exactly; in earlier years they can under-cover it.

### Baseline 5 and Future Spiral Baseline Upgrade Development — NEW START

Will continue PME development, integration, and test on platform upgrades and associated simulators/trainers, address PME discrepancies as required, and future analysis/maturation of baseline and capability development activities. Specific efforts include, but are not limited to, the following: • Will develop platform and PME…

Full year-by-year narrative: https://hitchintel.com/programs/0207253F/674807/a0

## What is NOT on this page

Congressional marks, the R-2 mission description and acquisition strategy, the industry vs government split of the whole request, and related program elements are recorded at **program-element** grain — an NDAA mark lands on a PE, never on a project. They are at https://hitchintel.com/programs/0207253F.

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0207253F project 674807 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0207253F")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*