Posted by: Five Star Travel & Cruises | April 28, 2011

Boeing CEO: Poor work caused hole in Southwest jet

In today’s update we have some insight as to the reason why Southwest plane had a hole rip open. The Associated Press Reporting.

The CEO of Boeing Co. says a “workmanship issue” and not poor design led to a hole ripping open in a plane that the company built for Southwest Airlines Co.

CEO Jim McNerney said Wednesday that signs do not point to a problem affecting large numbers of the Boeing 737.

The Southwest jet was built 15 years ago, but Boeing also faces scrutiny of its current manufacturing. Government inspectors went to two Boeing plants this week to study the company’s assembly process after Japan Airlines found metal filings in the fuel tanks of a new Boeing 767.

Metal shavings are a byproduct of building planes out of aluminum. The Federal Aviation Administration said it will study Boeing’s efforts to keep debris from fouling aircraft systems.

Boeing spokesman Marc Birtel said the inspections in Renton and Everett, Wash., were not affecting production. Boeing builds several models at those facilities including the new 787. The FAA inspections were first reported by The Seattle Times.

On April 1, a Boeing 737 operated by Southwest developed a 5-foot rip in the roof while cruising at 34,000 feet above Arizona.

Federal investigators found problems with riveting work done when the plane was built in 1996. The National Transportation Safety Board said in a preliminary report this week that holes drilled in the plane’s skin were too big for the rivets and were not properly lined up.

Independent experts said such problems would increase stress on the plane’s aluminum skin panels, leading to metal fatigue.

McNerney was asked on a conference call Wednesday what the company had learned about the Southwest jet.

“The initial data that I think we’re all seeing is suggesting a possible workmanship issue on an airplane rather than a design issue across a fleet of airplanes,” McNerney said. He emphasized the word “an” to downplay any suggestion of a wider problem.

John Goglia, an aircraft maintenance expert and former safety board member, said if the problem were confined to one plane, “that would be good news for the industry, but I don’t think we can say that with confidence yet.”

After the Southwest incident, Boeing told airlines to immediately inspect nearly 200 other 737s that were built with a similar design to the one that cracked open above Arizona, including about 80 owned by Southwest.

Most of those inspections have been done. Southwest found five other planes with cracks, but no other airlines have discovered problems, according to Boeing and government officials.

McNerney said the findings for the Arizona jet stood out, even from other planes that also had cracks. Boeing has collected pieces of several of the planes, and McNerney said the company’s own investigation was continuing.

The affected Southwest planes were all built from 1994 to 1996 at the same Boeing factory. Boeing says later models of the 737, starting around 2000, have a different design in which aluminum panels overlap on the roof and should not be prone to the same cracking problem.

The FAA ordered that some older Boeing 737s undergo inspections every 500 flights to detect the type of cracking found in the Southwest planes. FAA Administrator Randy Babbitt said Wednesday that the agency isn’t considering additional requirements for airlines or airplane makers right away and prefers to let the accident investigation run its course.

Initial speculation centered on the cracks resulting from Southwest using its planes more frequently than other airlines. The focus of the investigation shifted recently to Boeing’s manufacturing process.

DAVID KOENIG and JOSHUA FREED ASSOCIATED PRESS and Joan Lowy in Washington contributed to this report.

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