Originally Posted by
sadtraveller
Let us indeed be fair here. The upgraded software/firmware that Boeing delivered to the FAA is by far the most important project that Boeing has undertaken in years, and its success may even be essential for the long-term viability of the company's commercial aircraft division (i.e. to salvage the MAX and the company's reputation). One might assume, therefore, that Boeing has spared absolutely no resources or personnel on developing this software fix (to contemplate otherwise would result in an even more frightening assessment of the competence of Boeing management).
This means, therefore, that even Boeing's best engineers, when provided with unlimited resources, could not develop a safe fix for the MAX on the first try.
It is more likely that the requirements were changed by the (now extremely cautious) FAA certification process that required a regression back to analysis and design and all the associated rework including new certification tests for all changes and all the associated formal documentation then regression certification testing of associated systems.
This will not be a simple C# program.