What airlines does Trump own?

Excuse me, I've been hearing some rumors lately about the President Trump's involvement in the aviation industry. Could you clarify if indeed he owns any airlines? If so, which ones specifically? This question has sparked quite a bit of curiosity among the public, as his business ventures have always been of significant interest. Could you elaborate on this matter and perhaps provide some insight into how his ownership of airlines might potentially influence his policies related to the aviation sector? I appreciate your time in addressing this query.