Trump, seated beside Musk during a Fox News interview that aired Tuesday, shared with Sean Hannity his frustrations with Boeing, which isn’t set to grant the White House the two plane models until Trump nears the end of his term. 

“I mean, they are actually in default, Boeing,” Trump said. “They’ve been building this thing forever. I don’t know what’s going on.”

The Air Force contracted Boeing to supply the planes in 2018 with the expectation that they’d be delivered by 2024.

However, a combination of factors, such as a worker shortage during the pandemic and one of Boeing’s major suppliers falling behind schedule, pushed the project to a completion date of 2028 and forced Boeing to incur $2.4 billion in losses on the $4.3 billion contract. The Air Force already contractually committed to paying Boeing $3.5 billion. 

In an effort to speed up the process, Musk and Trump pushed for loosening the security clearance restrictions for some of the workers on the plan. 

The pair has been in talks with Boeing CEO Kelly Ortberg since November about how to speed the process along.

“The president wants the airplane sooner, and so we’re working with Elon and the team to figure what can we do to pull up the schedule of that aircraft,” Ortberg said in a CNBC interview late last month.

In December, Musk visited a Boeing facility in San Antonio to seek out ways to deliver the aircraft sooner.

In the meantime, Trump has been publicly shopping around for a new aircraft to put pressure on Boeing, having toured a Boeing 747 parked at West Palm Beach International Airport on Saturday.

However, even if Trump were to acquire this plane, a 747-8 that sells for about $400 million, it could still take several years to issue the plane to code to serve as Air Force One, two former Pentagon officials told the New York Times.