Boeing’s search for a new CEO ranks as the most closely watched succession drama in decades. If the manufacturing icon makes the wrong choice, its airline customers won’t get the planes they desperately need in the years ahead, raising prices and cutting frequency of travel for the 2.2 billion people who fly each year. It’s now clear that the directors’, regulators’, and Wall Street’s view of what the legendary planemaker needs in a new leader has totally changed since the notorious blowout over Portland, Ore., on Jan. 5 exposed manifold flaws in its manufacturing processes and procedures.