Boeing Upgrades EA-18G Growler As U.S. Navy Expands Electronic Warfare Capability

Boeing And U.S. Navy Modernize The EA-18G Growler

Boeing and the U.S. Navy are continuing upgrades to the EA-18G Growler to strengthen airborne electronic attack against increasingly sophisticated radar, communications and air defense systems. Boeing highlighted the modernization effort as the Growler reaches 20 years since its first flight in August 2006.

The modernization centers on the Growler Capability Modification program, increased onboard processing and detection capabilities, and integration of the Next Generation Jammer family. These changes are intended to keep the aircraft effective as adversaries field more capable and networked electromagnetic systems.

The Navy describes the EA-18G as a derivative of the F/A-18F Super Hornet that combines the aircraft’s carrier suitability with a specialized electronic warfare suite. The platform replaced the EA-6B Prowler and provides airborne electronic attack, electronic surveillance and support for suppression of enemy air defenses.

From EA-6B Replacement To Core Electronic Warfare Platform

The first EA-18G flew from Lambert International Airport in St. Louis, Missouri, on August 15, 2006. The aircraft subsequently entered the Navy’s test and fleet organizations before achieving its first combat deployment in 2011.

The first fleet Growler was delivered to Electronic Attack Squadron VAQ-129 in June 2008. Boeing delivered the 100th aircraft to the Navy in May 2014, while Australia became the first international operator of the aircraft.

The aircraft is designed to operate from aircraft carriers while conducting electronic attack missions that can include stand-off and escort jamming. Its role is not limited to disrupting hostile emitters. The Growler can also collect electronic intelligence, provide threat information and support the wider air wing with targeting and warning data.

This makes the aircraft an important part of the carrier air wing’s broader sensing and survivability architecture rather than simply a dedicated jammer.

Growler Capability Modification Targets The Aircraft’s Electronic Warfare Architecture

The Navy began its five-year Growler Capability Modification program in 2021. NAVAIR described the effort as the first major capability upgrade to the EA-18G since the aircraft entered service.

The program supports modifications required to integrate the Next Generation Jammer Mid-Band system and establish a foundation for further upgrades.

Boeing’s current description of the aircraft identifies Growler modernization with H16 and Next Generation Jammer integration. The company also emphasizes the aircraft’s open mission systems approach, which is intended to support the insertion of additional capabilities as requirements evolve.

The importance of processing power is particularly significant because modern electronic warfare is increasingly dependent on rapidly identifying emitters, determining their characteristics and selecting appropriate responses.

An aircraft that can detect more signals but cannot process them quickly enough may gain less operational value than one able to turn electromagnetic information into timely decisions.

Next Generation Jammer Replaces The Legacy ALQ-99

The most important part of the modernization effort is the transition from the legacy ALQ-99 Tactical Jamming System toward the Next Generation Jammer family.

The Navy says the Next Generation Jammer is designed to augment and eventually replace the ALQ-99. It uses digital technologies and electronically scanned arrays to provide greater airborne electronic attack capability, including improved ability to disrupt, deny and degrade hostile air defense and communications systems.

The transition is occurring incrementally rather than through a single replacement program.

The Next Generation Jammer Mid-Band, or NGJ-MB, addresses the middle portion of the electromagnetic spectrum. The Navy declared the system operationally ready in December 2024, and it was subsequently deployed with an EA-18G squadron aboard USS Abraham Lincoln during a carrier strike group deployment.

The Navy identifies NGJ-MB as the AN/ALQ-249(V)1. Production pods began reaching the fleet in 2023 after the program passed Milestone C in 2021.

Why The Upgrade Matters For Carrier Aviation

The strategic value of the Growler is closely linked to the changing character of air defense.

Modern integrated air defense networks can combine multiple radar types, communications networks, command systems and mobile missile units. These systems can also operate across different frequency ranges, making electronic attack more complicated than simply overpowering one radar.

The Navy’s Next Generation Jammer architecture is therefore being developed in multiple frequency bands.

NAVAIR identifies NGJ-MB as the mid-band component and NGJ-LB as the low-band component. The low-band system remains in the Engineering and Manufacturing Development phase, demonstrating that the broader replacement of the ALQ-99 is a continuing modernization effort rather than a completed transition.

This incremental approach also matters for fleet availability. Rather than waiting for an entirely new electronic warfare architecture to mature, the Navy can introduce individual capabilities as they become available while retaining legacy equipment where necessary.

Growler Supports More Than Jamming

Electronic attack is only one part of the EA-18G mission.

The aircraft can contribute to electronic surveillance and threat characterization while supporting other aircraft operating in contested electromagnetic environments. Boeing says the Growler can provide threat warnings and targeting information to platforms including the F/A-18 and F-35.

That role becomes increasingly important as aircraft depend on networked sensors and communications.

For a carrier air wing, electronic warfare can affect the conditions under which other aircraft operate. A Growler may help reduce the effectiveness of hostile sensors while simultaneously improving the air wing’s understanding of the electromagnetic environment.

The aircraft therefore functions as both an electronic attack platform and an airborne contributor to the wider kill chain.

The Technical Challenge Is Keeping Pace With Threat Evolution

The central challenge for the EA-18G modernization program is not simply adding more power to a jammer.

Electronic warfare is a contest between sensing, processing and adaptation. Hostile systems can change frequencies, alter waveforms, use different emitters or operate as part of distributed networks. An effective airborne electronic attack system must therefore respond to a changing electromagnetic environment rather than rely exclusively on fixed threat libraries.

The Navy’s use of digital and electronically scanned technologies in the Next Generation Jammer reflects this requirement. NAVAIR specifically identifies rapid hardware and software updates as part of the NGJ architecture, allowing the system to adapt as threats evolve.

That adaptability also explains why aircraft processing and mission-system upgrades are important.

A new jammer pod alone does not determine the effectiveness of the electronic warfare aircraft. The aircraft must be able to carry, communicate with and employ the new system while integrating information from its own sensors and other platforms.

Modernization Extends A Proven Carrier Aircraft

The EA-18G’s commonality with the F/A-18 Super Hornet provides an important sustainment advantage.

Boeing says the Growler shares more than 90 percent of its components and systems with the Super Hornet family. That commonality supports carrier operations, maintenance infrastructure and training across the two aircraft types.

The Navy’s modernization strategy consequently combines an established airframe with new mission systems.

This is significant because electronic warfare technology can change considerably faster than an aircraft’s basic airframe. Upgrading processors, software, sensors and external jamming equipment can allow the platform to absorb new capabilities without requiring the Navy to develop an entirely new carrier-based electronic attack aircraft.

The Navy’s FY2026 budget documentation also identifies Growler Capability Modification as supporting H16 and Airborne Electronic Attack System Enhancement and Next Generation Jammer Mid-Band software and hardware integration.

What Comes Next For The EA-18G

The Growler’s modernization path is likely to remain centered on incremental improvements rather than a single major redesign.

The immediate foundation is the integration of current Next Generation Jammer capabilities, continued aircraft modifications and improvements to processing and detection. The longer-term objective is a broader electronic warfare architecture capable of operating across additional portions of the electromagnetic spectrum.

For the U.S. Navy, the value of this approach is operational continuity. Carrier air wings can retain a dedicated airborne electronic attack aircraft while progressively replacing aging electronic warfare equipment.

For allied forces operating alongside U.S. naval aviation, the Growler also provides an electronic warfare capability that can support fourth- and fifth-generation aircraft operating in the same battlespace.

Twenty years after its first flight, the EA-18G remains a specialized component of U.S. naval aviation. Its future effectiveness will depend less on the age of the airframe than on the Navy’s ability to keep its sensors, processors, software and jamming systems ahead of changing electromagnetic threats.