The U.S. Air Force has officially ushered in its next-generation electronic warfare capability with the first operational training flight of the EA-37B Compass Call, a cutting-edge aircraft designed to dominate the electromagnetic spectrum.
On May 2, 2025, the 43rd Electronic Combat Squadron (ECS) at Davis-Monthan Air Force Base completed its first mission training sortie using the new EA-37B. The flight marked a pivotal step in the transition from the long-serving EC-130H Compass Call to this faster, more modern platform.
“The EA-37B and the professionals who support its mission represent the most recent evolution in a long history of EMS [electromagnetic spectrum] dominance for the ECG,” said Lieutenant Colonel Jesse Szweda, Director of Operations for the 43rd ECS. “The capabilities of this platform are the cornerstone to addressing emerging threats in any area of responsibility at any time.”
The EA-37B, tail number 19-5591, is the first of 10 aircraft expected under the program. It was delivered to the Air Force on August 27, 2024, and will be operated by the 43rd ECS, a component of the 55th Electronic Combat Group (ECG). Though based at Davis-Monthan, the 55th ECG reports to the 55th Wing headquartered at Offutt Air Force Base, Nebraska.
What Is the EA-37B Compass Call?
The EA-37B Compass Call is a highly advanced airborne electromagnetic attack aircraft developed under the Compass Call Rehost Program. Built on a modified Gulfstream G550 business jet airframe, the EA-37B integrates the mission systems of its predecessor, the EC-130H, into a sleeker, faster, and more fuel-efficient platform.
Its primary mission is to disrupt enemy command-and-control communications, radar systems, and other critical electronic networks—a vital capability in modern, contested battlespaces. By targeting these systems, the EA-37B helps degrade the enemy’s situational awareness and coordination, giving U.S. and allied forces a decisive edge.
Unlike the older EC-130H, which was based on a cargo aircraft design, the G550’s business jet frame allows the EA-37B to fly at higher altitudes, with greater speed and endurance, enhancing both survivability and mission effectiveness. It also reduces the logistical footprint needed to maintain and operate the aircraft.
Looking Ahead
As global threats continue to evolve, maintaining dominance in the electromagnetic spectrum is critical to success in any future conflict. The EA-37B represents a significant leap forward, allowing the U.S. Air Force to stay ahead of adversaries by fielding a more agile and capable electronic warfare platform.
The full EA-37B fleet will eventually consist of 10 aircraft, all of which will be operated by the 43rd ECS and maintained by a dedicated Contractor Logistics Support team. Together, they will ensure that the USAF remains ready to conduct electronic combat operations anywhere, anytime.
With its successful debut flight behind it, the EA-37B is now poised to shape the future of airborne electronic warfare.
