How to sell aircraft for golden planes

So I just finished servicing 100 crjs for Washington but can’t seem to find how to sell it for golden planes. Thanks!

Well you dont get it for free in IAD. Actually you dont get any free planes exceot the ATR in INN. You have to buy the crj, or other planes then sell it. Personally i would not recomend buying the CRJ. If you want to sell for gold planes buy and sell ATRs, best value for money. If you actually want to use the plane you buy, buy a BAe146