Sonoma County’s airport is getting another major boost to its expansion efforts with the world’s largest airline announcing plans Monday to begin daily, nonstop service to Phoenix starting in February. American Airlines will become the second major carrier offering daily service at Charles M. Schulz-Sonoma County Airport, which on Sept. 15 received county approval to finance a $20m project more than doubling the size of the terminal, as well as parking spaces at the west end of Airport Boulevard. Phoenix isn’t Denver or Salt Lake City, the two hubs most prized by airport officials and by many local travelers. But as its name implies, Phoenix-Sky Harbor International Airport is a major spoke, one that streamlines connections to farther-flung destinations. “It’s not a home run like Denver, but it’s close,” airport manager Jon Stout said Monday at the airport, where red, white and blue balloons reflecting American’s corporate colors festooned the passenger waiting area. “It gives us that hub, and it gives us that airline.”<br/>