Although it has the largest model designator of its generation, the 737-500 is actually smaller than either the 737-300 or the 737-400. The 737-500 is 101 ft 9 in long and can seat up to 132 passengers in an all-economy configuration. It was built to replace the 737-200. About the same size as the 737-200, it is the smallest member of the 737 family, but uses all the advanced technologies of the larger 737-300 and 737-400 models. The 737 family of jets share the reliability, simplicity, family commonality, and low maintenance costs that have made the 737 the favorite of the world's airlines.