We just went to one of our local banks. Told them we wanted to finance an aircraft and stipulated that we wanted a loan where we could choose to just pay interest if we wanted. I seem to remember that it was Suntrust Bank. They were OK with that. I think we paid maybe $1500 down on a Ka7 that was going for around $8000. Don’t remember the interest rate. Lea County State Bank in Hobbs, NM specializes in glider loans (thanks to their relationship with SSA). They would probably be the logical place to start.