March 14, 2026 — Renton, Wash. Boeing Co. discovered a Boeing 737 MAX wiring flaw halts deliveries of 25 jets on undelivered aircraft, prompting repairs on as many as 25 737 MAX jets and delaying some March deliveries in the first quarter of 2026 due to scratched wiring caused by a machining error, sources familiar with the matter said.
The issue, limited to produced but undelivered planes, does not affect in-service aircraft, according to Boeing statements. Production continues at 42 jets per month, with the company’s annual delivery target of around 500 jets unchanged.
Details of the Wiring Flaw
Boeing identified small scratches on wires during quality checks, traced to a machining error. The Boeing 737 MAX wiring flaw halts deliveries of 25 jets, as the company performs rework to ensure the aircraft meet quality standards before handover.
“Our 737 programme is performing rework on a group of airplanes to fix wires that have small scratches due to a machining error,” Boeing said. “This ensures they meet our quality standards before the airplanes are delivered.”
An engineering analysis confirmed the scratches pose no immediate safety-of-flight issue for operating 737 MAX jets.
Delivery and Production Impact
Some March deliveries will be delayed, potentially affecting first-quarter totals, though Boeing anticipates minimal overall disruption.
“Production of new 737 Max airplanes continues at the existing rate… We expect some near-term delivery delays that may affect our deliveries in the first quarter. But given the rework timeline, we do not currently expect this issue to impact our year-end delivery total.”
A Boeing spokesperson confirmed to Reuters: “Some March deliveries will be delayed.”
The Boeing 737 MAX wiring flaw halts deliveries of 25 jets, but Boeing informed customers the impact on 737 deliveries will be minor, per social media reports echoing Bloomberg.
Regulatory and Customer Response
Boeing notified the Federal Aviation Administration, which is investigating. The FAA stated it “cannot comment on active investigations.”
Boeing’s chief financial officer is scheduled to address the matter at the Bank of America Global Industrials Conference on March 17.
Broader Context
This marks another quality challenge for Boeing’s 737 program, following prior issues with 737 and 787 jets. Despite this, February deliveries reached 51 aircraft, including 43 737 MAX, the highest February total since 2017, per WSJ.
The Boeing 737 MAX wiring flaw halts deliveries of 25 jets temporarily, but the company maintains its production ramp-up plans to 47 jets monthly by year-end. Boeing’s backlog stood at 6,151 aircraft at February’s end.
X posts highlighted the news, with @CHItraders stating: “$BA BOEING IS REPAIRING 25 MAX JETS AS WIRE FLAWS HALT DELIVERIES BOEING TELLS CUSTOMERS 737 DELIVERY IMPACT WILL BE MINOR.”
The Boeing 737 MAX wiring flaw halts deliveries of 25 jets underscores ongoing efforts to stabilize the 737 MAX, a key revenue driver amid Boeing’s recovery.
