JetBlue Airways Corp. (JBLU) Chief Executive Officer Dave Barger is considering departing when his contract expires in 2015, and the board has begun planning for a possible successor as the airline struggles to win over investors. Barger, 56, hasn’t made a final decision and hasn’t given the board official notice about his plans, said Ann Rhoades, who has been a director for New York-based JetBlue since 2001. While JetBlue avoided bankruptcy last decade when many peers sought court protection, the carrier is missing out on a rally in the industry and the U.S. stock market.