Boeing stated {that a} new downside with the fuselages of some unfinished 737 jets would power the corporate to transform about 50 planes, probably delaying their supply and elevating additional issues about high quality on the producer and its suppliers.

Stan Deal, the chief government of Boeing’s industrial aircraft unit, stated in a memo to staff on Sunday {that a} provider final week had recognized that “two holes might not have been drilled precisely to our necessities.”

Joe Buccino, a spokesman for Spirit AeroSystems, Boeing’s fuselage provider, stated on Monday {that a} member of its workforce had recognized a problem that didn’t conform to engineering requirements. “As soon as notified, we started quick actions to determine and implement applicable restore options,” he stated. “We’re in shut communication with Boeing on this matter.”

Mr. Deal of Boeing stated in his memo that it was “not an instantaneous flight security situation.” He added that the 737s at the moment in use may proceed flying.

The brand new issues had been one other setback for Boeing, which has been underneath stress from regulators, buyers and its airline clients since Jan. 5, when a panel on a 737 Max 9 jet operated by Alaska Airways blew out mid-flight, forcing an emergency touchdown and the grounding of some Max 9s in the USA.

High quality issues at Boeing and its suppliers have taken on new urgency after information accounts, together with a report in The New York Instances, discovered that Boeing staff had opened and reinstalled the panel that blew off the Alaska Airways aircraft. Final week, Boeing declined to offer a full-year monetary forecast as scheduled, a sign that it was attempting to guarantee clients that high quality management would take priority over monetary efficiency.

Mr. Deal stated that Boeing would dedicate a number of “manufacturing unit days” this week on the firm’s manufacturing unit outdoors Seattle to deal with the mis-drilled holes and end different work on the undelivered 737s. Such days enable groups to pause regular work and attend to particular duties with out shutting manufacturing.

“That is what we imply once we say that we’ll go gradual to get it proper,” Mr. Deal stated within the memo.

The Federal Aviation Administration final month stated it will restrict Boeing’s output till it was assured in its high quality management processes, one other blow for the corporate, which had deliberate to extend manufacturing of its Max aircraft sequence to greater than 500 this yr, from about 400 final yr. The regulator additionally stated that it was investigating Boeing’s manufacturing practices and manufacturing strains, together with these involving Spirit AeroSystems.

The mechanical and questions of safety affecting the Max sequence have compounded the problems dealing with the aviation business extra broadly. Airways haven’t been capable of take full benefit of sturdy demand for flights lately due to shortages of planes, pilots, flight attendants and different staff wanted to function flights.

The Max sequence was already underneath scrutiny after crashes in 2018 and 2019 that killed almost 350 folks and led to the grounding of the Max 8 for almost two years. The newest issues with Max jets have renewed issues amongst some aviation consultants that Boeing has prioritized income and shareholder returns over engineering and security.