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A B-1B Lancer that arrived at McConnell Air Force Base last September for an extensive structural overhaul has returned to service more than three months early, highlighting how digital engineering is reshaping sustainment for legacy aircraft.
The bomber underwent a preemptive replacement of its Forward Intermediate Fuselage, a 33-foot section in the aircraft’s upper spine, at Wichita State University’s National Institute for Aviation Research as part of the Air Force’s BackBONE Project. The aircraft departed May 11 to rejoin the fleet.
“When we started work on the aircraft, we were looking at a 12-month repair,” said Abigail Ngo, program manager with the Air Force Life Cycle Management Center’s B-1 Program Office. “All in all, we were three-and-a-half months ahead of schedule. That is a good news story in itself — just the speed at which we were able to do a really hard thing.”
The accelerated timeline was driven by a high-fidelity digital twin effort that has been underway since 2020, with NIAR scanning disassembled retired B-1s and digitizing legacy drawings to build detailed 3D models. The team sequenced the repair virtually first, then validated it on a prototype before touching the operational aircraft. During installation, a laser measurement system transferred dimensions from the aircraft directly to the fixture where the new fuselage section was built.
“We’re glad to return the aircraft to the fleet early,” added Joe Stupic, B-1 Program Office senior material leader and division chief. “It was a big team effort, a great win and the field gets back a better jet. A jet that will require fewer inspections because of this repair.”
Following quality audits, maintainers from McConnell’s 22nd Maintenance Group and the 7th Maintenance Group from Dyess AFB restored the aircraft’s systems for its return flight to Air Force Global Strike Command.
Program officials say the success of this prototype repair sets a new benchmark for complex sustainment work. As the Air Force extends the B-1’s service life, they expect digital repair strategies to play a central role in preserving readiness. “The B-1 is the backbone of America’s bomber force, and proves it every day,” Stupic said. “This repair keeps it in the fight longer.”
