West Star Aviation has hired Greg Byrnes as senior vice president for sales. He replaces Rick Brainard, who was promoted to vice president for business development. Previously, Byrnes spent 17 years with Gulfstream Aerospace, where his most recent position was vice president of sales and new business development. Byrnes will be responsible for generating maintenance and modification sales for all West Star Aviation locations. Brainard will develop new business for all West Star locations.