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United and Alaska Airlines both reported on Monday that loose hardware had been discovered on some of their Boeing 737 MAX 9 planes during preliminary inspections after a dramatic mid-flight incident last week.
Issued on: 09/01/2024 – 05:22
3 min
The disclosures come as US federal transportation inspectors continued to probe what caused a so-called door plug component to blow out last Friday on an Alaska Airlines passenger plane, forcing it to make an emergency landing.
United said Monday it had “found instances that appear to relate to installation issues in the door plug — for example, bolts that needed additional tightening.”
Hours later, Alaska Airlines announced its staff had found that “loose hardware was visible on some aircraft.”
Boeing shares tumbled Monday as investors began to assess the financial implications of the incident, while US aviation authorities provided airlines with protocols to check planes with similar configurations to the 737 MAX 9 aircraft involved in Friday’s incident.
Hundreds of flights have been canceled due to the grounding of a fraction of the MAX fleet.
“As operators conduct the required inspections, we are staying in close contact with them and will help address any and all findings,” Boeing said late Monday.
“We are committed to ensuring every Boeing airplane meets design specifications and the highest safety and quality standards. We regret the impact this has had on our customers and their passengers.”
Aviation analysts said the issue appeared to be a quality control problem rather than a design issue akin to the problem with a flawed flight handling system involved in two fatal MAX crashes in 2018 and 2019.
But Boeing has struggled with supply chain and quality control problems since the MAX returned to service, limiting its output and hitting its bottom line.
In December, Boeing urged airlines to undertake additional inspections to check for loose hardware on plane rudder control system after an international operator discovered a bolt with a missing nut while performing routine maintenance.
Inspection protocols
With 79 MAX 9 planes, United has the largest fleet of the aircraft in question.
“We’re working to return our Boeing 737 MAX 9s to service in the days ahead,” United said in a statement.
United has canceled 200 MAX 9 flights since the incident and expects “significant cancelations” on Tuesday, the carrier said.
Following the Alaska Airlines incident, the Federal Aviation Administration (FAA) ordered operators to ground 171 jets with the same configuration with the door plug.
A door plug is a cover panel used to fill an unneeded emergency exit in planes with smaller seat configurations.
On Monday, the FAA announced that it approved a roadmap for carriers to complete inspections that include both left and right door plugs, components and fasteners.
Alaska Airlines said it was still awaiting “final documentation” from Boeing and the FAA before beginning the formal inspection process.
“The safety of these aircraft is our priority and we will take the time and steps necessary to ensure their airworthiness, in close partnership with the FAA,” Alaska said.
AeroMexico, which has suspended 19 planes, said it is in the “final phase” of inspections, adding, “we expect all MAX-9s in our fleet to return to operation in the upcoming days.”
Culture challenge
The incident is the latest setback for the manufacturer, particularly over the 737 MAX.
The worst were two crashes — of a Lion Air flight in October 2018, and an Ethiopian Airlines flight in March 2019 — that caused the deaths of 346 people in total and triggered the grounding of all 737 MAX planes for nearly two years.
Boeing Chief Executive Dave Calhoun called a company-wide meeting for Tuesday focusing on safety, saying the company has made progress but that “situations like this are a reminder that we must remain focused on continuing to improve every day,” he said in a message to staff.
Analysts said the Alaska Airlines problems may have stemmed from a manufacturing defect.
Since the crashes, Boeing has repeatedly slowed or suspended production on both the MAX and the larger 787 Dreamliner due to problems that have been uncovered by staff prior to incident in the sky.
The latest episode is “indicative of a major cultural challenge” facing Boeing, said Richard Aboulafia, managing director at AeroDynamic Advisory. “They need to change. They can’t just keep lurching from crisis to crisis.”
Analysts said Boeing could face slower government approvals for new jets or on proposed repairs.
“The gravest injury in the most recent commercial jet accident is to Boeing’s reputation,” read the headline of a note from Morningstar.
(AFP)
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