PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures
Old 3rd Aug 2019, 11:20
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HighWind
 
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Originally Posted by Zeffy
Lemme said the proposed software architecture switch to a “fail-safe,” two-channel system, with each of the computers operating from an independent set of sensors, will not only address the new microprocessor issue but will also make the flawed Maneuvering Characteristics Augmentation System (MCAS) that went haywire on the two crash flights more reliable and safe.
Originally Posted by groundbum
as an IT engineer this changing from flip-flop to dual reduandancy is massive, and unless work started years ago will NOT be ready for September. And if it has been rushed then it needs full end to end testing as it's such a fundamental change. There's a philosophy in coding that for every 2 things you fix, you break something else. It's the nature of the beast.
This is a huge task to design from scratch.
Even moving hardware from a more modern aircraft like B787 to B737, and then adapt the software to handle all the differences in hardware interfaces (protocols etc), user interface, difference in control laws etc.
Do Boeing have a military variant of the B737 with a more modern flight control system, that can be reused on the MAX?
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