A drop in the global air-cargo business is hastening the decline of the 747 jumbo jet just as Boeing Co. is preparing to launch a new plane that could ultimately replace it. With its distinctive hump and four big engines, the 747, nicknamed "the queen of the skies," has been a symbol of jet travel for much of the past four decades. But in recent years, as airlines have chosen to fly passengers in more fuel-efficient, two-engine planes, the 747 has increasingly become an aviation… (online.wsj.com) 更多...
