I have a lot of them. It's a good plane, but not as good as I was expecting.
The positives: Price. It's ultra-cheap. It's got a decent passenger load, speed, and range, making it the cheapest useful plane in the game by quite a margin. If you're short on cash and badly need some extra planes, the Aircruiser's the best plane in the game.
The negatives: It's really too small for anything besides short-hop routes to small cities. You can't build a competetive airline with just Aircruisers - you need something bigger to fly the real money-making routes.