Purchasing Aircraft on Credit

Is purchasing an aircraft on credit as simple as it seems? You pay a down payment and then weekly instalments until the aircraft + interest is paid off? Because in the cases I have been seeing a used aircraft instalment is often lower than the weekly leasing rate. I don’t want to get stuck with any unexpected fees! And can you sell the aircraft before you have fully paid off the aircraft?

Not quite. You pay the down payment, and then weekly instalments PLUS interest on the amount still owed (Value - Down Payment - Weekly Instalments already paid)