Max 9 panels adjust Boeing performs pressure tests but does not normallyMax 9 panels adjust Boeing performs pressure tests but does not normally

According to a source acquainted with Boeing’s industrial practices, the company usually doesn’t modify the kind of panel involved in the recent burst of the 737 MAX 9 until problems are found during factory testing. As per information acquired last week, Spirit AeroSystems, a Boeing supplier, ships partly built fuselages to Boeing with the particular panel – designed to replace an optional emergency escape – attached but not finalised.

The people who spoke to us said that Boeing workers usually take off the panel, put pieces of passenger equipment through the gap, and then put the panel back on for the final installation. But a person who knows how Boeing makes things stressed on Friday that the company only changes or removes the panel if there are signs that it was installed wrong, which is how things usually work in the factory. The person said that Boeing does certain checks and tests to make sure the plane is under pressure before giving it to a flight. The person also said that loading from the inside happens in other parts of the plane.

All the information given was about normal production methods and didn’t directly address the recent incident involving the Alaska Airlines jet, which had to make an emergency landing after a panel tore off in the air, leaving a large hole in the body.

If authorities know more about how Boeing builds its biggest single-aisle plane, they will be better able to figure out if the accident was caused by design or manufacturing issues.

The companies Boeing and Spirit AeroSystems did not want to respond, and Reuters was not able to directly confirm the production methods. The Federal Aviation Administration is currently investigating these methods. At the same time, the National Transportation Safety Board is looking into what caused the accident in a different investigation.

The people who gave information decided to stay unnamed because the probes are still going on.

After a previous safety problem, the FAA is now in charge of clearing individual MAX planes. They started an official investigation into the MAX 9 last Thursday. Chief of the FAA Mike Whitaker told Reuters that he thinks the problems with the MAX 9 are caused by the way it was made, not by a mistake in the design.

There are problems in the aerospace business right now with a lack of supplies and workers, so makers have to find other ways to keep making things. This makes it hard for people to keep a close eye on the production process. The Air Current recently said that Boeing doesn’t take out the plug for the alternative emergency exit very often, only when there’s a problem with the “rigging” or the installation. However, Boeing does check the quality of its products. After what happened with the Alaska Airlines plane—the door plug came loose at 16,000 feet—the FAA grounded more than 170 plans like it. A person who knows how Boeing’s factories work said that the plug is held in place vertically inside the body of the plane by four bolts. Two bolts connect the upper guide roller to a pin near the top of the plug, and two bolts at the bottom joints keep the plug from moving up and down.

Reuters was not able to confirm this information, so it is still not clear at what point in the production process these bolts are protected and what checks are done by Boeing. Industry insiders who were told on the situation gave varying versions of who was responsible for what. At least one source questioned whether or not all Max 9 panels were installed correctly when the fuselages left Spirit. Once it’s in use, planes usually take out the plug every two years or so for repair, and bigger doors are used to load the rooms. Quality control has gotten more attention since the accident, with companies finding weak bolts in other planes after the fact.

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