March 10, 2026 — Boeing disclosed that wiring flaws discovered on some undelivered 737 MAX aircraft, caused by a machining error during production, will delay certain first-quarter deliveries while production continues unabated.
The company identified small scratches on wiring bundles in a group of undelivered planes at its Renton factory. Boeing stated it is performing rework, with fixes taking several days per aircraft, potentially slowing March deliveries. No safety risks exist for in-service 737 MAX jets, and Boeing notified the FAA and customers.
“Our 737 program is performing rework on a group of airplanes to fix wires that have small scratches due to a machining error.”
A Boeing spokeswoman noted the fixes could be completed in days and might slow overall deliveries this month, according to the Wall Street Journal.
Production and Delivery Outlook
Boeing reaffirmed its full-year goal of delivering approximately 500 737 jets, unaffected by the issue. Production remains at 42 jets per month, with plans to increase to 47 later in 2026 and 63 in coming years, including a new assembly line at Everett, Washington, this summer.
In February 2026, Boeing delivered 51 jets total—including 43 737 MAX—the highest February figure since 2017, up from 46 in January (Reuters; WSJ). Aviation Week reported a pause in ticketing and deliveries for assessment, impacting first-half expectations but not the annual target (Aviation Week).
Market Reaction
Boeing shares fell 3.2% in trading on March 10 (WSJ), amid CEO Kelly Ortberg’s push for quality improvements.
Early social media reports echoed the news, with X users citing WSJ on Boeing 737 MAX wiring flaws delay some deliveries and confirming no safety risks to flying planes while full-year targets hold (X posts).
The FAA is investigating the wiring issue, adding to ongoing scrutiny of Boeing’s manufacturing processes.
