For those of us who've been around for a year or more will recognize that this is absolutely standard for the player in question. His consistent strategy has been to buy as many cheap, old planes as he can early on, drive up his pax numbers and therefore airline value, parlez that into large loans at every opportunity, and then use that borrowed cash to buy replacement aircraft. It's proved to be a very effective strategy for him too, resulting in him being amongst the top three airlines/players in a number of game worlds. There are inherent risks in the strategy, of course, but if you have (a lot!) time to spend monitoring the game, understand the game mechanics very well, and have a cast-iron lining to your stomach it can work very effectively.