Flyhound
Pre-takeoff checklist
If you are looking for a place to invest $500K and expect some growth from your investment, the high end of the GA market is the only place where there is any appreciable growth. That is a reflection of the growing schism between the "haves" and "have nots". The lower end of the GA spectrum was supported by a solid middle class that has been eviscerated. Spirit airlines is an air carrier and by definition is not a GA investment.
If you are looking to contribute $500K to have a positive impact and are not concerned about ROI, then there are a number of places where money could help. There are many GA mercy flight organizations (like the Air Charity Network, Corporate Angel Network and Honor Flight Network) that could use help, there are facilities like the Rhinbeck Aerodrome in New York and the Flying Circus in Virginia that serve to keep aviation history alive with flying antiques and there are restoration centers like the Smithsonian Air and Space Udvar Hazy museum that would be happy to take donations.
If you are looking to contribute $500K to have a positive impact and are not concerned about ROI, then there are a number of places where money could help. There are many GA mercy flight organizations (like the Air Charity Network, Corporate Angel Network and Honor Flight Network) that could use help, there are facilities like the Rhinbeck Aerodrome in New York and the Flying Circus in Virginia that serve to keep aviation history alive with flying antiques and there are restoration centers like the Smithsonian Air and Space Udvar Hazy museum that would be happy to take donations.