Malaysia Airlines’ outgoing chief executive Peter Bellew said on Wednesday his decision to leave the airline for Ryanair was due to a sense of responsibility to his native country. His departure after just over a year in charge means Malaysia’s national carrier must appoint a third chief executive in three years as it continues to recover from two tragedies in 2014, when flight MH370 disappeared in mysterious circumstances and flight MH17 was shot down over eastern Ukraine. Ryanair announced on Tuesday that Bellew, its former director of flight operations, would be rejoining the Irish airline as chief operating officer on Dec. 1 to help address a pilot-staffing issue that has led to the cancellation of around 20,000 flights. Bellew, an Irish national, said his return to Ryanair was due to “love for country” and that he could not turn down a request to help the struggling airline. “It is Ireland’s greatest company. They need my help and there is a big challenge. It is a form of national service,” he said in a statement released in his personal capacity and not on behalf of Malaysia Airlines. Malaysia Airlines said Bellew’s decision to leave for Ryanair was “unexpected”, and that its…