Boeing Halts 25 737 MAX Deliveries Over Wiring Insulation Defect

RENTON, Wash. — Boeing has paused deliveries of approximately 25 737 MAX aircraft following discovery of small scratches on electrical wiring insulation caused by a machining error.

The interruption began March 10 at the company's Renton facility, where an undetermined number of jets in final assembly require inspection and rework before delivery. Katie Ringgold, Boeing 737 vice president, said the delay would take several days to resolve without affecting long-term production rates. "Our 737 program is performing rework on a group of airplanes to fix wires that have small scratches due to a machining error," Ringgold stated.

Boeing said all in-service 737 MAX aircraft can continue operating safely and has notified the Federal Aviation Administration. While full-year delivery targets remain at least 500 aircraft, March output will be reduced significantly as only three planes were delivered early in the month before the pause. The incident underscores ongoing quality control challenges for Boeing under heightened FAA oversight following recent manufacturing issues.