The U.S. Air Force approved a major B-52H modernization program redesignated B-52J, awarding Boeing $2.16 billion and Raytheon $603 million for engine replacement and radar upgrades across the entire 76-aircraft fleet. Initial operational capability is targeted for 2033.
What's happening
- Boeing won $2 billion to replace engines on two test B-52s with Rolls-Royce F130 turbofans, with production decisions planned for 2028-2029.
- Raytheon received an IDIQ contract ceiling of $603 million to produce and sustain AN/APQ-188 AESA radars for the full B-52H fleet.
- Boeing also won $163 million for updated bomb-rack hardware modifications.
- All 76 operational B-52H aircraft will receive the engine, radar and hardware upgrades by initial operational capability in 2033.
Why it matters
- The modernization extends the B-52 fleet service life by replacing aging airframes with new engines and digital radar, reducing maintenance burden and improving mission capability.
- The F130 engine burns 30% less fuel and increases range by 40% on internal fuel, reducing dependency on tanker support and extending sortie endurance.
- The AN/APQ-188 AESA radar provides high-resolution all-weather targeting and is harder to jam, modernizing the bomber's combat power against contemporary threats.
- Upgrades address the fleet's current 54% mission-capable rate by eliminating aging components that drive maintenance difficulty and downtime.
Going deeper
- Boeing's San Antonio plant began work on two test aircraft after a critical design review in May 2026, with the first engine-modified B-52 expected for testing at Edwards AFB.
- The first B-52 with the AN/APQ-188 AESA radar was delivered to Edwards AFB for testing in December 2025.
- The B-52 fleet has been in continuous service since the H model entered service in 1961, with the type itself first flying in 1952.
Financial impact
- Boeing recognizes revenue on the $2 billion engine-replacement contract (signed December 2025) as modifications progress on the two test aircraft through 2028-2029, with full fleet re-engining revenue deferred until production decisions.
- Raytheon's $603 million IDIQ radar contract ceiling will be recognized over the production and sustainment period through 2033 as orders are issued against the ceiling.
- Boeing's $163 million bomb-rack hardware contract will be recognized as modifications are performed across the 76-aircraft fleet through 2033.
The intrigue
- Fitting eight new engines onto 74-year-old airframes is complex; government reports warn that concurrent flight testing and production can incur delays and cost growth.
- The radar program has already seen rising costs and schedule delays, creating risk for the 2033 IOC target across the modernization effort.
The fine print
- The $2 billion engine contract covers modification of two test aircraft; production decisions for the remaining 74 aircraft are planned for 2028-2029.
- Raytheon's radar contract is an IDIQ with a $603 million ceiling, not a firm fixed obligation; actual funding depends on orders issued by the Air Force.
- Testing schedules have already slipped; initial operational capability targeting 2033 assumes prototype testing and production concurrency proceed without further delays.
Source: overtdefense.com · Sep 25, 2026 · Drafted with Claude, reviewed by Industrial Base Alpha.
