MCAS is designed to function only during manual flight (autopilot not engaged), with the aircraft’s flaps up, at an elevated AOA. As the development of the 737-8 (MAX) progressed, the MCAS function was expanded to low Mach numbers and increased to maximum MCAS command limit of 2.5 o...
As Boeing and the FAA advanced the 737 MAX toward production, they limited the scrutiny and testing of the MCAS design. Then they agreed not to inform pilots about MCASin manuals, even though Boeing’s safety analysis expected pilots to be the primary backs...
Gosh, The Boeing 737 MAX Is A Mess… Ben Schlappig Published: January 9, 2024 Updated: January 25, 2024 130 130 Share Tweet On January 5, 2024, an Alaska Airlines Boeing 737 MAX 9 had a deactivated emergency exit blow out inflight, leading to a rapid decompression, and making headlin...
In the days after the second Boeing 737 Max crash, no-name pilots and independent writers with obscure blogs out-explained many of the world’s best newspapers. The variance in quality between journalists outside a field and experts within it is largest for technical or scientific fields. Soon...
The 737 MAX will remain grounded while Boeing develops a "software fix" that eliminates this potential problem, and then works with the FAA and international authorities to certify it. There should also be new MCAS training that all 737 MAX pilots around the world will receive before they fly...
The grounding of the Boeing 737 MAX resulted from design flaws with the Maneuvering Characteristics Augmentation System (MCAS) that caused two fatal crashes. The Boeing 787 Dreamliner was grounded due to electrical incidents caused by faults in its lithium-ion batteries. The McDonnell Douglas DC-...
Yet Boeing decided that the 737 MAX would only use input from one of the plane’s two AOA sensors. If the single AOA sensor was triggered, MCAS would detect a dangerous nose-up condition and send a signal to the horizontal stabilizer located in the tail. Movement of the stabilizer would ...
Fig. 1. Angle of Attack Sensors Credit: Boeing/Mentourpilot. 3. Why a MCAS on B-737 MAX? On the B-737 MAX there are two AOA sensors, but only one feeds data into the MCAS. In both accidents this sensor seems to have malfunctioned, driving the software to command the nose-down mane...
Boeing is working to fix yet another software bug on its 737 Max, Bloomberg reports. The glitch involves an indicator light for the "stabilizer trim system," which helps raise and lower the plane's nose. The light was turning on when it was
Congressional hearings on Boeing and the 737 MAX this week didn’t just focus on Boeing’s failures but brought stern criticism of the FAA’s certification process and the decisions that led to MCAS, its reliance on a single Angle of Attack sensor, and not to train pilots on the design. ...