Key Points – The US Air Force’s program to modernize its B-52 Stratofortress fleet into the B-52J variant is facing significant challenges, including a 17% cost overrun on its new radar system, which has triggered a Nunn-McCurdy breach requiring congressional notification.
-The upgrades, including new Rolls-Royce engines and an advanced AESA radar, are intended to keep the venerable bomber flying into the 2050s.
A U.S. Air Force B-52H Stratofortress aircraft flies in a seven-ship formation during the Hyundai Air and Sea Show at Miami Beach, Florida, May 24, 2025. The flyover represented the Air Force’s total force, integrating active duty, guard, and reserve pilots flying the B-1B Lancer, B-2 Spirit, F-22 Raptor, A-10 Thunderbolt II, B-52H Stratofortress, F-16C Fighting Falcon, and F-15C Eagle aircraft. (U.S. Air Force photo by Staff Sgt. Bailee A. Darbasie)
-However, critics argue that investing billions in a non-stealthy, Cold War-era airframe is a strategic mistake.
-They contend these funds would be better spent accelerating production of the B-21 Raider, a next-generation stealth bomber designed for modern, contested environments.
B-52J: Are The Upgrades For The Cold War B-52s Worth the Money?
Recent reports indicate that the rising costs of the B-52 Radar Modernization Program—one of the key upgrades that will transform the B-52H into the B-52J configuration—have overrun its budget by 17 percent, surpassing the 15 percent threshold that mandates notification to Congress. The service is now considering reducing the scope of the program.
The Nunn-McCurdy Act requires the services to tell Congress when a program’s cost or schedule estimate has increased substantially from its approved baseline. If there is a “critical” breach of cost or schedule—defined as a 25 percent increase—the Department of Defense must certify the program as necessary for national security or cancel it.
Despite cost concerns, US Air Force acquisition officials are reportedly confident the program can proceed, refining requirements to ensure affordability while preserving critical capabilities.
What Are The Upgrades To Make The B-52J Model?
The legendary B-52 Stratofortress, first flown in the 1950s, is being modernized with new Rolls-Royce F130 engines, state-of-the-art radar systems, engine pylons, digital engine controls, and other upgrades to the venerable bomber, extending its service life into the 2050s. The planned Initial Operational Capability for the new radar is 2027.
The upgrade, led by US defense contractor Raytheon in collaboration with aerospace giant Boeing, replaces the aging AN/APQ-166 with a new active electronically scanned array (AESA) radar, designated AN/APQ-188. This hybrid system is based on radar systems used in the F-15 and F/A-18.
Once complete, the aircraft will be redesignated as the B-52J, a name befitting a bomber expected to remain in service until at least 2050, when the youngest of these airframes will be approaching their 100th birthday.
However, as Dr. Brent Eastwood pointed out, “the Air Force wants to trade the old mechanically-scanned AN/APQ-166 radars in each of its 76 B-52Hs for new active electronically-scanned array (AESA) versions. This is going to cost a whopping $34 million each.
“But worse than the high cost is the schedule slip. In FY21, it was estimated that the radar swaps would take 63 months to complete. By FY23, the estimated schedule had grown to 73 months,” Eastwood wrote. “That is a schedule slip of 16 percent longer in duration for the upgrade.”
The Biggest Argument Against This Modernization
The most significant factor in extending these modernization efforts, which the US has undertaken several times, is that by prolonging the life of the Cold War icon, the B-52, the US will not adopt next-generation alternatives, namely the B-21 Raider stealth bomber.
The B-21 Raider is designed for survivability in contested 21st-century environments, is built to penetrate modern air defenses, and operates undetected where legacy bombers cannot.
Modern air defense systems are becoming increasingly sophisticated, and the B-52’s large radar cross-section makes it a more vulnerable target than stealthier aircraft.
Critics argue that the Air Force should prioritize platforms that can operate effectively in these contested environments, like the B-21 Raider, ensuring the ability to penetrate advanced air defenses and deliver precision strikes. We saw that with the B-2 stealth bombers just about a week ago. There was a reason the Air Force chose B-2s over B-52s for the airstrikes on Iran’s nuclear enrichment centers.
An R-12 hydrant service vehicle refuels a B-2 Spirit during hot-pit refueling operations at Whiteman Air Force Base, Missouri, May 28, 2025. Hot-pit refueling is the practice of refueling an aircraft immediately after landing while keeping the engines running. (U.S. Air Force photo by Staff Sgt. Joshua Hastings)
Yet rather than fully committing to the B-21 and expanding production beyond the planned 100 aircraft, the Air Force is doubling down on a Cold War workhorse. The US should plan on building much more than the 100 B-21s.
The idea that the B-52J can remain a foundation of US strategic bombing until 2050 rests on the assumption that future wars will resemble our past ones. That is a dangerous assumption for the crew members and the Air Force.
MORE: China Is Now Officially Afraid of the B-2 Bomber
The fact that Russia is using Cold War bombers as standoff missile trucks doesn’t take into consideration that China is far more advanced than Ukraine.
The B-52, despite its standoff capability to launch missiles, is not survivable against peer or near-peer adversaries on the modern battlefield.
And every dollar we spend on a Cold War B-52, as great a plane as it is, is a dollar less we spend on the B-21 Raider. And that is what we need to be building more of.
About the Author:
Steve Balestrieri is a National Security Columnist. He served as a US Army Special Forces NCO and Warrant Officer. In addition to writing on defense, he covers the NFL for PatsFans.com and is a member of the Pro Football Writers of America (PFWA). His work was regularly featured in many military publications.
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Everett
June 27, 2025 at 12:47 pm
Poorly written article. The B 52 will be very useful in any future conflict. We will almost always have air superiority and necessary escorts for the B 52. My suggestion to the writer of this article is to do in depth studying of air warfare tactics and strategies. Interview a few general’s next time.
William f McQuillan
June 27, 2025 at 1:32 pm
B21 is the latest and most expensive plane conceived. $800 Million each. For the cost of a handful of B21 we can update 75 B52. Of course the B52 will be armed with long range standoff weapons to protect the crew and plane from air defenses.
Douglas L Self
June 27, 2025 at 5:40 pm
Written by a Grummam/Northrop employee, no doubt.
There hasn’t been even justification why the Air Force needs 100 of the B-21 Raiders. While cutting back to , say 60 wouldn’t necessarily produce a 40 percent program cost saving, supposedly part of the reason for the B-21 at all is reuse of technology originally developed for the B-2. It seems that the targeted production run is more with primary contractor profit in mind than contemplated missions.
Yes, the B-52 is highly vulnerable to interception and combat loss as compared to the B-2 and the B-21. This was a criticism aired by the US Navy in the 1950s, which even after the “Revolt of the Admirals”, was still stumping for carrier-based strategic nuclear bombers. It gained a lot of traction in light of the shoot-down of Francis Gary Power’s U-2 in May of 1960. Still, the combat and operational record of the “Buff” in the 65 years since still have shown the worth of keeping the Buffs flying. With now third and fourth generations of aircrew flying them, they still are competitive with payload, range, and loiter time. Indeed, the B-52 with the avionics upgrades and the more efficient tirbofans will well outlive the B-1 Lancer, itself marking 40 years of impressive Air Force service.
Hfinn
June 27, 2025 at 6:46 pm
Why is every online dingbat convinced the only war in our future is US vs China? Not every conflict will be a peer to peer LSCO. We need a low operating cost bomb truck for 2 reasons: 1) cheap, and 2) you don’t parade around your latest low observable bomber for every local bush war, because every time you let the Chinese or Russians point a radar at it the more chances they have at testing methods for detecting it.