Burbank city leaders and the Burbank-Glendale-Pasadena Airport Authority have announced a new agreement that would lead to expansion of the crowded Burbank Airport and end a four-year legal battle. The deal allows the airport to build a terminal nearly twice the size of the current terminal but retain the same number of gates — 14. The airport would close concessions and services from 11 p.m. to 6 a.m. daily and phase out noisier Stage 2 jets. If the airport convinces federal regulators to approve a 10 p.m. to 7 a.m. flight curfew, the airport could add two more gates. Should the airport and city agree on a passenger limit, the airport could grow to 19 gates. The Airport Authority in early August voted 5-2, with two members absent, to approve the plan. The Burbank City Council has scheduled a public hearing on the airport proposal for Oct. 19. Almost immediately, airport expansion foes spoke of a referendum or a Burbank City Council recall because the plan does not mandate a night-time flight curfew.