ET 33 passengers said that they could see the sky as the hole initiation of an investigation of an American plane that a hole in the roof of the cabin in mid-flight developed proof of metal fatigue has found in the hull. The hole caused a sudden drop in cabin pressure, and flight 812 from Phoenix to Sacramento was forced to make a steep descent and to make an emergency landing.
The implementation of more than 100 people landed safely in Arizona.
Owners Southwest Airlines cancelled 300 flights on Sunday at inspections of 79 of its planes as possible.
A flight attendant was slightly injured during the incident on Friday but nobody was seriously injured.
There were 118 passengers and crew members aboard the 15-year-old plane.
Investigators said that the rip began where two outer panels were riveted together, and that the area around it showed evidence of already existing due to fatigue cracking.
"We did evidence of widespread crack on this whole fracture surface, find" member of the National Transportation Safety Board Robert Sumwalt told reporters.
The plane is one of the oldest in the southwest of fleet and has thousands of flights, but the company said it had undergone all the required inspections.
Description of the incident, passenger Brenda Reese the plane had just Phoenix claimed when she heard a gunshot-like sound ".
Passengers aboard Southwest Airlines flight described what happenedWitnesses said a few people almost passed out while scrambling for oxygen masks.
Aviation officials said the pilot made a controlled descent, dropping 8,000 m (25000ft) of 11,000 m in about five minutes.
Same thing happened to another Southwest jet in 2009. Then, metal fatigue was the cause.
As a result, the company changed its maintenance program, but before that incident Southwest Airlines paid millions of dollars to settle charges it was skip of inspections.
In 1988, cracks caused a hole to open in an Aloha Airlines plane over Hawaii. In that incident died a stewardess.
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