Boeing CEO Calhoun’s exit leaves uphill task for successor

Boeing CEO David Calhoun will leave the troubled aircraft maker at the end of the year, leaving a difficult turnaround job to his yet-to-be-named successor. But his tenure might not join the list of his successful earlier stints including at Caterpillar, General Electric and media company Nielsen, leaving when the iconic planemaker is struggling to resolve production issues and safety concerns. The Jan. 5 mid-air panel blowout was the most recent in a spate of safety issues that have shaken the industry's confidence in Boeing and hampered its ability to increase production to meet high demand for jets.