Reply to post: Re: Lack of systems thinking

Boeing 737 pilots battled confused safety system that plunged aircraft to their deaths – black box

SkippyBing Silver badge

Re: Lack of systems thinking

Some of the comments on the Pprune threads linked above make your point about considering the whole system. It does look a lot as if Boeing added MCAS to get around a certification problem with the 737 MAX but didn't consider all the potential interactions with the rest of the 50 year old design. It's also quite worrying that it only uses 1 of 2 AOA sensors* and doesn't even do a comparison with the other one to see if the data is valid.

*It swaps the in use sensor every flight, hence the previous sector not experiencing the same issue with MCAS, although the other faults were still manifest.

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