Spirit AeroSystems, the Wichita-based aerospace producer that manufactured the door plug that blew out on the Alaska Airlines flight, declined to touch upon the incident. However, in an announcement printed on its web site, Spirit says its “primary focus is the quality and product integrity of the aircraft structures we deliver.”

The firm’s elements have precipitated points for Boeing previously. The Seattle Times reported again in October on defects in Spirit elements that contributed to months-long delayed deliveries of Boeing 787 plane. Tom Gentile, the then CEO of Spirit, resigned following these and other production errors by the corporate.

But Fehrm hypothesizes the blowout might have been resulting from alleged oversights that occurred after Spirit had added the door plug, as soon as Boeing retook possession of the airplane. Fehrm claims Boeing makes use of the door in query to entry elements of the airplane throughout its checks forward of the plane being cleared to fly. And so, in his opinion: “Someone has taken away the bolts, opened the door, done the work, closed the door, and forgot to put the pins in.”

In different phrases, he’s leaning towards processes being at fault, not the airplane’s design. This, although, raises issues about the best way airplane security checks are carried out.

In concept, within the US the FAA checks aircraft for his or her airworthiness, granting them certification to fly safely. Aircraft designs are studied and reviewed on paper, with floor and flight assessments happening on the completed plane alongside an analysis of the required upkeep routine to maintain a airplane flightworthy.

In follow, these critiques are sometimes delegated to third-party organizations which are designated to grant certification. Planes can fly with out the FAA inspecting them first-hand. “You won’t find an FAA inspector in a set of coveralls walking down a production line at Renton,” says Tim Atkinson, a former pilot and plane accident investigator and present aviation guide, referring to Boeing’s Washington state–based mostly 737 manufacturing facility.

The FAA depends on third events as a result of it’s already overstretched and must concentrate on safety-critical new applied sciences that push ahead the most recent improvements in flight. “It can’t [check all aircraft itself], because you’re producing 30 to 60 aircrafts a month, and there are 4 million parts in an aircraft,” says Fehrm.

“Designated examiners have always been part of the landscape,” says Mann, however he believes the most recent collection of occasions add to current questions round whether or not that is the best method. On the opposite hand, there are at present no sensible options, he says.

The airplane within the Alaska Airlines incident was granted an airworthiness certificate on October 25, 2023, and issued with a seven-year certificates by the FAA on November 2. FAA data don’t embrace who granted the certificates on behalf of the FAA, and the administration declined to establish the group or particular person who permitted the airplane’s airworthiness. The airplane’s first flight occurred in early November.

With this being a 3rd main and doubtlessly life-threatening incident for Boeing in little over 5 years—all involving a single sort of plane—the corporate’s standing has taken a success.