Another delay is on US Air Force's doorstep regarding KC–46A tanker delivery. The service confirmed the deliveries are likely to occur in late calendar year 2018.

According to a statement by the US Air Force, this assessment is based on known risks and predicted impacts associated with airworthiness certifications and slower than expected flight test execution. The Air Force will continue to work with Boeing to develop schedule mitigations, where appropriate, to expedite the program. “These potential delays will not result in additional program cost to the taxpayer,” the service added.