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AFGSC: B-1 mission-critical part shortages drop from 450 to 160
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One year into the North Star Readiness Campaign, Air Force Global Strike Command (AFGSC) reports early progress in boosting readiness for the aging B-1B Lancer and B-52H Stratofortress bomber fleets. Launched in summer 2025, the campaign coordinates maintenance and supply logistics among AFGSC, Air Force Materiel Command, and the Defense Logistics Agency to streamline spare parts supply and depot operations. The effort is critical as the B-1 fleet (average age ~40 years) must fly through 2037 and the B-52 (average age >60 years) even longer, pending the B-21 Raider fleet buildup. In 2024, B-52s were mission-capable 54% of the time and B-1s 43%, both on a downward trend. The command reported that B-1 mission-impacting part problems (MICAPs) dropped from over 450 to about 160, allowing maintainers to focus on high-priority backorders. Daily coordination meetings have reduced some parts shipment timelines from over a week to two or three days. The B-52 is undergoing a major modernization (to become the B-52J) with new engines, avionics, and radar to keep it flying into the 2050s. Gen. S.L. Davis stated the campaign is a commitment to ensuring the bomber force is ready at a moment's notice.
Source report
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One year into a new initiative to improve readiness rates for the B-1B Lancer and B-52H Stratofortress bombers, Air Force Global Strike Command (AFGSC) is reporting early progress and planning further improvements.
The North Star Readiness Campaign
Launched in summer 2025, the North Star Readiness Campaign focuses primarily on coordinating maintenance and supply logistics for two of the Air Force's most heavily used—and most stressed—fleet types. AFGSC is partnering with Air Force Materiel Command and the Defense Logistics Agency (DLA) to:
- Streamline the supply of spare parts and engineering support
- Break down logistical barriers
- Improve depot operations to accelerate B-1 and B-52 repair and maintenance
Officials say the readiness drive is essential to keep the B-1 flying through 2037 and the B-52 even longer, while the Air Force builds its new fleet of B-21 Raiders. The average age of the B-1 fleet is approaching 40 years, and the B-52 fleet average has surpassed 60 years. Over time, the Air Force has faced increasing difficulty in keeping these aircraft mission capable.
Mission Capable Rates
The Air Force no longer publishes mission-capable rates—the percentage of time an aircraft is available and able to perform its mission. However, in 2024:
- B-52s were available 54 percent of the time
- B-1s were available 43 percent of the time
Both rates had been on a steady downward trend.
Leadership Statement
"The North Star Readiness Campaign is our commitment to ensuring the warfighter has the nation's bomber force ready to go at a moment's notice. This is a team effort. It brings together the operators at Air Force Global Strike Command, the acquisition and sustainment experts at Air Force Materiel Command, and our logistics partners at the Defense Logistics Agency to focus on one thing: operational readiness."
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— Gen. S.L. Davis, Global Strike commander, in a Sept. 8 statement
Measurable Progress
In its Sept. 8 release, Global Strike did not provide updated mission-capable rates but highlighted several achievements:
Reduction in MICAPs
The B-1 fleet has frequently suffered from "mission-impacting part problems" (MICAPs), which occur when a critical part fails and no spare or replacement is available.
- At the start of the campaign: more than 450 MICAPs
- Currently: approximately 160 MICAPs
This reduction has allowed maintainers to shift focus from immediate emergencies to high-priority backorders and emerging failure trends.
Faster Supply Chain
Daily meetings between DLA representatives, supply chain officials, logistics readiness squadrons, and flightline maintainers have helped identify delayed parts and resolve problems more quickly. By clearing procedural bottlenecks, the command has reduced some shipment timelines from more than a week to two or three days.
Aging Fleets and Modernization
The campaign comes as the Air Force grows increasingly concerned about its ability to keep enough bombers operational, with key platforms showing their age.
B-1 Lancer
- Current fleet size: 45 aircraft
- Heavily flown and worn out during the Global War on Terror
- Over the past five years, the Air Force retired 17 of its most exhausted B-1s to allow maintainers to focus on the healthiest airframes
B-52 Stratofortress
- Current fleet size: 75 aircraft
- The Pratt & Whitney TF33 engines are original, dating back to production, and frequently break
- Many companies that manufactured B-52 spare parts have closed or stopped production, forcing the service to find alternative sources—and even cannibalize non-flying Stratofortresses for usable parts
The Air Force is undertaking a major modernization effort for the B-52, which will replace its engines, avionics, radar, cockpit displays, and other key components. The upgraded bomber will be redesignated the B-52J and is expected to remain in service into at least the 2050s.
Image: James Shobert performs programmed depot maintenance on a B-1 aircraft at the Oklahoma City Air Logistics Complex at Tinker Air Force Base, Oklahoma, Dec. 4, 2022. The B-1 is receiving upgrades outside of its depot maintenance schedule to enhance its lethality in the future. (U.S. Air Force photo by Carter Denton)
Source
Air & Space Forces MagazineWestern
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US Air Force North Star campaign slashes B-52 and B-1 part shortages from 450 to 160