The EA-37B is a next-generation, tactical jamming platform tasked with disruption of enemy C3, radar, and navigation. It will also offer offensive
counterinformation, EA, and SEAD support.
The aircraft is based on the ultra-long-range Gulfstream G550 business aircraft and adapted from the Navy’s special mission configuration. 
USAF awarded L3 Technologies a contract on Sept. 7, 2017, to replace the EC-130H in the tactical EA role and transplant its “Compass Call” systems to a more modern aircraft.
The program, originally dubbed “EC-X” will “re-host” upgraded EC-130H
mission equipment directly to the EA-37 with nearly 70 percent remaining unchanged.
EA-37B is faster, more economical, capable of higher altitude operations, and more survivable than the EC-130H. Upgrades will allow it to conduct standoff jamming/EA from greater distance for attacks against A2/AD targets.
The first aircraft was purchased in FY17, followed by a second in FY18. Congress accelerated the program by funding two airframes in FY19, and USAF plans to procure and modify one aircraft a year through FY25. The first five aircraft are receiving the EC-130H’s upgraded Baseline 3 package, including Advanced Radar Countermeasure System (ARCS) and other significant capability enhancements.
FY21 procures the sixth airframe, which will be the first delivered with the future Baseline 4 configuration slated for deployment in 2026. Air Combat Command plans to field the first five EA-37Bs in 2023.
EA-37B Compass Call Technical Data
Contractors: Gulfstream Aerospace (airframe); BAE Systems; L3 Harris (mission equipment).
First Flight: N/A.
Delivered: 2023 (planned).
IOC: 2023 (planned).
Production: Four (two currently in modification).
Inventory: 10 (planned).
Operator: ACC (planned).
Aircraft Location: Davis-Monthan AFB, Ariz. (planned).
Active Variants: •EC-37B. Military Electronic Attack version of the Gulfstream G550.
Dimensions: Span 93.5 ft, length 96.4 ft, height 25.8 ft.
Weight: Max T-O 90,500 lb.
Power Plant: Two BR710C4-11 turbofans, each 15,385 lb thrust.
Performance: Speed 600 mph, range 6,300 miles.
Ceiling: 51,000 ft.
Accommodation: Two pilots, TBD.
