The registration for the jet, which Trump had been using to go to campaign events, expired on Jan. 31.
In response, the FAA last week grounded the plane.
But the plane was registered to a new owner on Friday: DT Endeavor I, a limited-liability company registered in Delaware in January and controlled by Trump.
If Trump had instead re-registered his plane, he may have had to face a longer waiting period before being allowed to fly. But because the candidate registered the plane under a new owner, he was able to avoid the normal wait time.
“I haven’t flown it, but I can,” Trump said in an interview Saturday, adding the issue had been “100 percent” resolved.
He used the jet to get to Rhode Island and Pennsylvania for rallies Monday ahead of the states’ Tuesday primaries.
Trump said the registration had expired because the renewal notices were sent to the wrong address.
The plane’s new registration expires on April 30, 2019.