The EA-37B Compass Call modernizes electronic warfare by replacing the EC-130H, offering advanced jamming and enemy defense suppression capabilities.
The EA-37B Compass Call is the US Air Force’s new electronic warfare aircraft, designed to replace the aging EC-130H. Based on the Gulfstream G550 business jet, it offers superior performance in terms of speed, altitude, and range. Equipped with advanced jamming systems, it aims to neutralize enemy communications, radars, and navigation systems, thereby enhancing the electromagnetic superiority of US forces.
The EA-37B: a major advance in electronic warfare
The EA-37B Compass Call represents a significant evolution in the field of electronic warfare. Designed to replace the EC-130H, it is based on the Gulfstream G550, a business jet modified to meet military requirements. This platform offers a maximum speed of 767 mph (approximately 1,234 km/h) and a cruising altitude of 13,716 meters, far surpassing the capabilities of the EC-130H.
The EA-37B is equipped with advanced jamming systems capable of disrupting enemy communications, radars, and navigation systems. It plays a crucial role in suppressing enemy air defenses (SEAD) by preventing coordination between sensors, control networks, and weapons.
The transition to the EA-37B also allows for a reduction in crew size from 13 on the EC-130H to 9 on the new aircraft, thanks to automation and improved systems integration.
Transition from the EC-130H to the EA-37B: necessary modernization
The EC-130H Compass Call, in service since the 1980s, was showing signs of aging. With an operational availability rate of only 33% in 2023, it was imperative to replace it.
The transition program to the EA-37B began with the delivery of the first aircraft to Davis-Monthan Air Force Base in August 2024. The 43rd Electronic Combat Squadron was the first to operate this new aircraft, marking the beginning of a new era in electronic warfare for the US Air Force.
The planned fleet includes 10 EA-37Bs, half of which have already been delivered. The remaining deliveries are scheduled for 2027 and 2028.
Technical specifications and performance of the EA-37B
The EA-37B is powered by two Rolls-Royce BR700-710 C4-11 engines, each providing 15,385 pounds of thrust. It is approximately 29.4 meters long, with a wingspan of 28.5 meters and a height of 7.9 meters. Its fuel capacity is approximately 22,400 liters, giving it a range of 8,167 kilometers.
The EA-37B’s jamming systems are based on an open architecture, allowing for rapid updates to address new threats. The Compass Call mission system, developed by BAE Systems, has been transferred from the EC-130H to the EA-37B, with improvements in signal processing and waveform generation.
The integration of electronic equipment is being carried out by L3Harris in Waco, Texas, while airframe modifications are being performed by Gulfstream in Savannah, Georgia.
Strategic implications of the introduction of the EA-37B
The EA-37B enhances the US’s ability to conduct operations in contested environments, particularly against adversaries with A2/AD (anti-access/area denial) capabilities. By disrupting enemy communications and control networks, it enables allied forces to conduct operations with electromagnetic superiority.
In addition, the use of a business jet-based platform reduces operational and maintenance costs while offering greater flexibility for deployments. This enables a faster response to emerging threats and adaptation to technological developments.
Finally, the open architecture of the mission system facilitates the integration of new capabilities, ensuring that the EA-37B remains relevant in the face of future threats.
Future prospects and implications for allies
The introduction of the EA-37B paves the way for increased collaboration with US allies. In October 2024, the US Department of State approved a potential sale of the EA-37B to Italy, highlighting international interest in this advanced platform.
This adoption by international partners could enhance interoperability during joint operations and promote the sharing of intelligence and technology. It could also stimulate cooperation in the development and upgrade of electronic warfare systems.
In conclusion, the EA-37B Compass Call represents a significant advance in electronic warfare, offering enhanced capabilities to address current and future threats. Its entry into service marks a key milestone in the modernization of the US Air Force and its allies.
War Wings Daily is an independant magazine.