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Detecting cracks on B-737 aircraft
Milan, Italy - Tight controls on the fuselages of giant Boeing
On first April, Southwest flight 812, en route from Phoenix to Sacramento, 118 passengers. Twenty minutes after take-off a roar and a sudden gust of strong wind trigger panic. "On the roof, more or less in the middle of the corridor, had opened a gash of 1 mt and half from where you could see the sky", said one witness after the emergency landing (fortunately with no injuries) on the military track...
AVIONEWS - World Aeronautical Press Agency