The Boeing 737 was originally developed as a smaller, less expensive alternative to the popular 727. It has since developed into an entire family of small to medium size, narrow body, twin engine aircraft. Continuously updated over the years, the 737 is the most successful aircraft in aviation history. It's in its 35th year of continuous production, with 6600+ aircraft delivered, and over 2000 still on order.
This model represents the larger, advanced 800 model.