About 50 Boeing 737 MAX will be reworked after supplier reports wrong holes drilled in fuselage

Boeing said on February 5 that approximately 50 undelivered 737 MAX aircraft needed to be reworked after supplier Spirit AeroSystems discovered two incorrectly drilled holes in some fuselages. This situation may cause delivery delays.

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Boeing confirmed the existence of the window frame drilling spacing issue. However, Boeing emphasized that this will not have an impact on flight safety and that the 737 aircraft currently in service can continue to operate safely.

Boeing Commercial Airplanes CEO Stan Deal said in a letter to employees: "Last Thursday, our suppliers notified us of a non-conformance issue on some 737 airframes. Thank you. employee of the supplier, who reported to his manager that two holes may not have been drilled completely according to our requirements."

Deere said that while the situation did not immediately affect flight safety, about 50 aircraft were not The delivered 737 aircraft need to be reworked to ensure safe operation.

According to sources, the recent inspection focused on window frame components provided by Spirit, and there may be problems with the positioning of two holes on these components. As of Friday, such "nonconformities" or quality defects had been found on 22 aircraft airframes, accounting for nearly half of the 47 airframes Boeing and Spirit Production Systems had inspected to that point. In addition, there may be some 737 passenger aircraft in service.

According to figures provided by Deere on Sunday, inspections are progressing quickly and only a small portion of hundreds of production line airframes are affected by the problem.

A Spirit AeroSystems spokesperson said: "As part of our total quality management program, our team members discovered an issue that was not consistent with engineering standards."

According to sources, this The discovery was made during a routine notification called an "escape notification." According to the notice, suppliers will report any known or suspected quality issues to Boeing. Usually in the aerospace field, similar quality reports are not uncommon, but for Boeing, the time window of this discovery appears to be quite sensitive. It is understood that the incident occurred on the evening of January 5, local time. Shortly after a Boeing 737 MAX 9 passenger aircraft belonging to Alaska Airlines took off, an emergency door in the rear cabin of the aircraft suddenly fell off, causing an instant loss of pressure in the cabin, forcing The plane made an emergency landing.

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