BAE Systems to Modernize AN/ALQ-221 Defensive System for U-2 Aircraft

This article is based on an official press release from BAE Systems.

On March 17, 2026, BAE Systems announced it had been awarded a sustainment and modernization contract by Robins Air Force Base in Georgia to support the AN/ALQ-221 Advanced Defensive System (ADS). The ADS serves as the primary electronic warfare (EW) and self-protection suite for the U.S. Air-Forces’s U-2 Dragon Lady, a high-altitude surveillance and reconnaissance aircraft.

According to the company’s press release, the contract ensures continuous field service support, hardware repairs, and critical Software updates for the aircraft’s defensive systems. This ongoing maintenance is designed to keep the U-2 survivable in highly contested airspace, allowing it to detect and engage new, emerging threats.

The announcement highlights a fascinating dynamic within the U.S. Air Force: while the military branch has publicly planned to begin divesting the aging U-2 fleet in Fiscal Year 2026, it continues to invest in state-of-the-art electronic warfare capabilities to protect the aircraft during active, high-stakes deployments.

Sustaining the AN/ALQ-221 Advanced Defensive System

Hardware and Software Modernization

The AN/ALQ-221 system provides U-2 pilots with integrated Radar-Systems warning and electronic countermeasures. By utilizing long-range sensors and onboard processing, the system delivers essential situational awareness and self-protection. According to the BAE Systems press release, the sustainment work will be primarily executed by experts at the company’s facility in Nashua, New Hampshire, alongside dedicated field service representatives deployed globally.

Industry research data indicates that the AN/ALQ-221 is specifically tailored for the U-2’s extreme operating environment at altitudes exceeding 70,000 feet. The system relies on 13 receivers and transmitters to detect surface-to-air and air-to-air threats. Crucially, the system’s architecture allows for inflight software updates, enabling the aircraft to adapt its target recognition algorithms and jamming techniques without requiring extensive hardware overhauls.

“The Advanced Defensive System for the U-2 is part of BAE Systems’ long legacy in electronic warfare. Evolving, modernizing, and sustaining EW systems is in our DNA. Our efforts ensure they can operate effectively throughout their lifecycles.”

A Legacy of Electronic Warfare

While the U-2 airframe is a Cold War-era icon, its internal systems have been continuously modernized. Development of the ALQ-221 began in 2004, reaching Initial Operating Capability (IOC) in October 2005 as part of the U-2’s Block 20 modernization program, according to historical defense data. BAE Systems notes in its release that the aircraft’s unique, modular design and open Avionics architecture allow engineers to quickly develop, test, and field new capabilities to support modern battlespace operations.

The U-2 Dragon Lady in Modern Operations

Balancing Retirement and Relevance

The sustainment of the AN/ALQ-221 comes at a pivotal moment for the U-2 program. Based on U.S. Air Force budget documents, the military has planned to begin retiring the U-2 fleet in Fiscal Year 2026 to reallocate funds toward space-based sensors and classified unmanned systems. However, congressional pushback and the aircraft’s unmatched operational capabilities have kept it flying.

Recent operational data shows the U-2 remains heavily engaged in active missions. The aircraft has recently been deployed in support of “Operation Epic Fury,” providing vital signals and imagery intelligence over high-threat areas. Furthermore, in August 2025, the U-2 celebrated its 70th anniversary of flight, marked by a record-breaking 14-hour, 6,000-mile mission flown by a TU-2S trainer variant over all 48 contiguous U.S. states.

“Ensuring the mission readiness of the U-2 fleet requires a constant evolution of its defensive capabilities to match emerging global threats.”

AirPro News analysis

We observe a compelling “twilight tech” paradox surrounding the U-2 Dragon Lady. The Air Force is actively navigating the planned retirement of a 70-year-old airframe, yet it is simultaneously awarding Contracts to equip that same aircraft with cutting-edge electronic warfare software. This underscores a broader shift in modern aerial combat: survival is increasingly dictated by software rather than the airframe itself.

Because legacy platforms like the U-2 lack physical stealth characteristics, they rely entirely on advanced electronic warfare to remain undetected or un-targetable in the electromagnetic spectrum. By leveraging the U-2’s open architecture to push algorithmic updates to the AN/ALQ-221, defense contractors can allow a Cold War-era jet to outsmart 21st-century surface-to-air missile systems. Furthermore, the U-2’s current role as a high-altitude surrogate testbed for 5th- and 6th-generation fighter technologies, as well as the Joint All-Domain Command and Control (JADC2) network, makes its continued survival a strategic necessity for the Pentagon.

Frequently Asked Questions

What is the AN/ALQ-221?
The AN/ALQ-221 Advanced Defensive System (ADS) is an integrated electronic warfare suite designed by BAE Systems. It provides radar warning and electronic countermeasures for the U.S. Air Force’s U-2 reconnaissance aircraft.

Where is the sustainment work being performed?
According to BAE Systems, the system is sustained by experts at the company’s facility in Nashua, New Hampshire, and by dedicated field service representatives deployed with the aircraft.

Is the U-2 aircraft being retired?
The U.S. Air Force has outlined plans to begin divesting the U-2 fleet in Fiscal Year 2026 to fund newer technologies. However, the aircraft remains in active service for critical intelligence missions, and its defensive systems continue to receive funding and upgrades.

Sources

• BAE Systems Official Press Release