Complex sentence: As of February 11,2011, Mesa operated 77 aircraft with approximately 439 daily system departures to 94 cities, 38 states, the District of Columbia and Mexicopress and United Express under contractual agreements with US Airways and United Airlines, respectively, and independently as go !
Split into simpler sentences: As of February 11,2011, Mesa operated 77 aircraft with approximately 439 daily system departures to 94 cities, 38 states, the District of Columbia and Mexico. Mesa operates as US Airways Express and United Express under contractual agreements with US Airways and United Airlines, respectively, and independently as go!