We saw Spirit Airlines cease operations early this morning, after losing money for seven years straight, and filing for Chapter 11 bankruptcy twice. It goes without saying that Spirit going out of business is a bit of a relief for some of the other airlines in the country that are losing money and struggling , like Frontier and JetBlue. Along those lines, JetBlue is wasting no time adjusting its route network, in order to fill the void left by Spirit, and hopefully improve its own economics. JetBlue’s crew base resizing gives us a sense of its plans How will the competitive dynamics play out in Fort Lauderdale? Bottom line JetBlue’s crew base resizing gives us a sense of its plans JonNYC shares how JetBlue has internally revealed plans to resize its flight attendant bases, just hours after Spirit ceased operations. As the airline describes it, it’s taking steps to better align staffing with where flying actually is.…