Musk received a version of the jet with TFE731-5BR-1C engines. The jet was bought by Musk before he became a billionaire. The jet was previously registered to other companies, including a multi-level marketing company. This shows that Musk bought a pre-owned jet. The registration for Musk's Falcon 900B is N900SX. PlaneLogger's database shows that Musk's jet was last seen in active use in 2016 In an interview with Chris Anderson at the TED Conference in April, Musk said he doesn't own a home, a yacht, or take vacations. According to flight records obtained by The Washington Post, he flew more than 150,000 miles on his plane in just one year. There are only four jets that have been registered to Musk and the other company. Insider did not get a reply from Musk or the company. Keep reading.