Boeing 737 Max: a minimum viable product?
I suspect the agile paradigm has taken over the aircraft industry, or at least in Boeing and the FAA. The MCAS was a sprint for the 737 Max, and the 737 Max was a sprint to incorporate the new engine. There was a lot of engineering and testing in these sprints: these sprints took a long time. However, the fundamental thinking changed from a requirements-first approach to an agile approach that seeks to fail quickly.