Delivery Suspension Lifted as Root Cause Identified
After months of delays caused by structural cracking concerns, the US Air Force is preparing to accept new KC-46A Pegasus refueling tankers from Boeing as early as next week. Top acquisition officials confirmed during a House Armed Services subcommittee hearing that the root causes of the delivery halt have been identified, and preparations are underway to resume aircraft deliveries.
Darlene Costello, acting as the Air Force’s acquisition chief, announced that both the service and Boeing have made progress in resolving the issues—specifically cracking on the outboard fixed-trailing edge support structure—that led to the hiatus.
Boeing Reaffirms Commitment to Mission Readiness
Boeing’s KC-46 vice president Lynn Fox emphasized the company’s ongoing partnership with the military. “We appreciate the collaboration with the U.S. Air Force to safely resume deliveries,” Fox stated. “We recognize the KC-46A’s critical role in the Air Force’s mission, providing advanced aerial refueling capabilities. We look forward to continuing our efforts to grow and sustain the fleet.”
Cracking Issue Previously Led to Delivery Delays
The delay stemmed from cracks on aircraft’s structural supports, which, while not safety-of-flight concerns, needed addressing before aircraft could be delivered. The problem centered on cracks found on the aileron hinges of two aircraft yet to be delivered. Since 2018, the Air Force and Boeing have been aware that the KC-46’s parent aircraft—a commercial 767—could develop similar cracks over time. However, the discovery of cracks on new aircraft prompted a comprehensive pause in deliveries.
Inspections Confirm Significant Progress
To date, all 89 KC-46s assigned to the Air Force have undergone inspections. Costello reported that cracks were found in 21 aircraft; all but three have since been repaired. This extensive inspection and repair process has paved the way for the fleet’s expansion.
New Challenges Emerge with Vision System Delays
While the resumption of delivery offers relief, the program faces new headwinds with the announcement that a critical fix for the tanker’s vision system will now be delayed until 2027. This delay complicates the aircraft’s operational readiness and underscores ongoing technical challenges, despite progress on structural issues.
Conclusion
The upcoming KC-46A deliveries mark a significant step forward for the Air Force’s modernization efforts. However, the program’s future momentum could be tempered by continuing technical setbacks, emphasizing the complex nature of integrating advanced aircraft systems into a reliable and mission-ready fleet.
