It is a current behavior on Aircraft Market that when there are 50 aircraft from AS Trader on aircraft market, an aircraft that comes in as #51 is discarded (and #52, #53… #X).
I propose a modification to the behavior in small way, and is as follows:
if the aircraft #51, #52 … #X is newer than the oldest aircraft listed on the aircraft market, the oldest aircraft is removed from the aircraft market and is replaced by newer aircraft #51. This would maintain the limit of 50 aircraft from AS trader being listed, but would refresh the market with newer units.