flight control

The incident reignited questions about what Boeing had done to improve its safety and quality record since the accidents, which were tied to the company's flight control system.

Both crashes were primarily attributed to a poorly designed flight control system, which activated at the wrong time due to a sensor failure.

Both crashes were linked to faulty flight control systems.

That’s because planes have backup hydraulic systems, which are used to power equipment like the landing gear, brakes, wing flaps and flight controls, allowing planes to take off, fly and land.

Flaws in that new flight control system led directly to the crashes that killed 346 people.