Anyone who did that service for you, would not be doing you a favour, they would just be delaying the inevitable outcome, which is that your business model is not sustainable and never will be.
Firstly, go look at your commonality page ; see just how much that aircraft is costing you in fixed costs every month : and thats before you pay for anything else on it. Its why you'll always be told that you really need 10 or so of a type to spread those fixed costs around a bit so that your operating profit on them is not eaten up just paying for commonality costs.
yes, its right to start your airline using older, cheaper, easily leased aircraft : but they carry a 'poison pill': increased maintenance as they get older, and the older they get, the more that will rise. Thats bearable while you are expanding fast at game-start, you need tin in the air making profit so you can replace it with newer onesbefore those high mx costs hit you; keep them into d-check territory and then your profits go into keeping them flying, not replacing them. And eventually you end up where you are; you cant replace it, you cant maintain it, ergo, you cant fly it : it stops making money and keeps costing you money.
'Vanity' projects are fine : they add spice to the game and provide much enjoyment in it : but they are best done when you are rolling in the cash from a solid, well-founded operation that can bear the (always much higher than you think) costs.your operation is not well-founded, isnt rolling in the cash : time to rethink and consider alternatives to it.
just my 1.99c worth..