Photo: AP

According to records maintained by the Federal Aviation Administration, one of Donald Trump’s airplanes—his 1997 Cessna 750 Citation X jet, which flew as recently as Monday—is not actually registered to fly. The lapsed registration was first reported by the New York Times.

The Cessna has made hundreds of flights since Trump announced his candidacy in June, including dozens subsequent to the registration’s expiration on January 31. On Friday, according to the Times, it flew to Plattsburgh, New York, and then to Hartford; on Monday, it flew to Buffalo.

A spokeswoman for the FAA, Laura Brown, confirmed that the plane’s registration had not been renewed. The Times reports:

With few exceptions, aircraft must be registered in order to fly. Mr. Trump’s plane could be grounded for several days, or even months, while the issue is sorted out. In the event of an accident, the company that insures the plane could use the expired registration as a reason to decline any claims.

The F.A.A. could also fine or assess other penalties against the owner and/or operator; Mr. Trump owns the plane through a limited liability company. Though it is unlikely that the F.A.A. would seek the maximum penalty, flying with no registration could result in a civil penalty of up to $27,500, a criminal fine of up to $250,000 and imprisonment for up to three years, the agency said.

Fortunately, Trump’s Boeing 757 is registered until April 2018.