Maneuvering Characteristics Augmentation System
Boeing's aircraft control system involved in fatal accidents
Maneuvering Characteristics Augmentation System
The Maneuvering Characteristics Augmentation System (MCAS) is a flight stabilizing feature developed by Boeing that became notorious for its role in two fatal accidents of the 737 MAX in 2018 and 2019, which killed all 346 passengers and crew among both flights. Because the CFM International LEAP engine used on the 737 MAX was larger and mounted further forward from the wing and higher off the ground than on previous generations of the 737, Boeing discovered that the aircraft had a tendency to push the nose up when operating in a specific portion of the flight envelope (flaps up, high angle of attack, manual flight). MCAS was intended to mimic the flight behavior of the previous Boeing 737 Next Generation. The company indicated that this change eliminated the need for pilots to have simulator training on the new aircraft. After the fatal crash of Lion Air Flight 610 in 2018, Boeing and the Federal Aviation Administration (FAA) referred pilots to a revised trim runaway checklist that must...
Read on Wikipedia · Image John Crowley from Seattle, WA, USA, CC BY-SA 2.0
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