Trumps Jet not Registered

It has just been discovered that Republican Presidential candidate Donald Trumps private jet is not registered with Federal Aviation Authority, to fly. The planes registration expired on January 30th and has not been re-registered. Although he has up to April 30th to register the plane. The cost is only $5. But the penalty for flying an unregistered plane might be up to $250,000 or it might take up to 5 years to register the plane again. I bet Trump can afford a new one if this one is grounded.
The FAA has already warned Mr Trump and a final notice was given to the company that manages the jet on Dec 1st according to records reviewed by some major news media.