A Spirit Airlines aircraft undergoes operations in preparation for departure at the Austin-Bergstrom International Airport in Austin, Texas, on Feb. 12, 2024.Spirit Airlines CEO Ted Christie said Friday that the budget airline isn't considering a chapter 11 bankruptcy filing and is "encouraged" by its plan after a failed takeover by JetBlue Airways.Spirit has been struggling with shifting travel demand, increased U.S. competition and a Pratt & Whitney engine recall that grounded dozens of its Airbus planes. ...