Boeing shares slide after new 737 Max software issue tied to landings

Boeing disclosed a new 737 Max software issue affecting navigation equipment in certain landing scenarios, prompting an immediate negative equity reaction. The development reintroduces operational and certification overhangs, raising near-term uncertainty around deliveries, airline confidence, and potential remediation timelines. While not a broad macro catalyst, the headline is material for Boeing-specific risk and can spill over to aerospace sentiment via renewed safety and quality scrutiny.