Aircraft engineering isn't all software though. There's a significantly non-trivial part that is hardware design (arguably the bulk of it), with incredibly tigh

Aircraft engineering isn't all software though. There's a significantly non-trivial part that is hardware design (arguably the bulk of it), with incredibly tight tolerances, and often unique alloys. All of which can make or break a design. Even just a single component, like the engine, is a massive engineering undertaking. If the company developing the powerplant under-delivers the entire program can be a bust.