Donald Trump's Jet Not Registered With FAA He could be slapped with penalties from the government.

 -- Donald Trump's glistening Cessna jet that he flies across the country to appear at campaign events is not registered with the Federal Aviation Administration.

The Cessna 750's registry expired on Jan. 31, 2016 and has not been renewed. The New York Times first reported the discovery.

Did Trump know his plane was going to expire? He likely did, according to FAA spokesperson Laura Brown.

"The FAA sends notices several months before the aircraft’s registry expires, reminding the owners to re-register the aircraft," explained Brown. "Two months before the expiration, a second notice is sent to owners of aircraft that have not yet been issued a renewal certificate,” according to the FAA’s website.

Trump campaign spokesperson Hope Hicks told ABC News via email, “The standard renewal process is just about complete.” Hicks did not respond to follow up questions regarding why the registration lapsed or whether Trump would face penalties.

But according to the U.S. Department of Transportation, operating an unregistered aircraft may result in civil penalties. The plane is registered through a limited liability company in Delaware.

According to the FAA's website, an aircraft is required to re-register every three years at a cost of $5. When an aircraft registration is not renewed, “the cancellation of the N-number assigned to that aircraft will take place approximately 90 days after the expiration of an aircraft's registration. Upon cancellation, an N-number will be unavailable for re-assignment or reservation for a period of five years.”

The 90 day deadline for Trump's plane is April 30, 2016.