I'm very pro OSS, but I don't think this actually makes sense. Other open source, non-free software is usually a general purpose piece of software expected to b

I'm very pro OSS, but I don't think this actually makes sense. Other open source, non-free software is usually a general purpose piece of software expected to be licensed out to many users and run in a variety of environments, for a variety of use cases. The flight control software on a 787, on the other hand, has one intended end user (who is also the owner), runs in one rigidly controlled environment, with a fixed set of use cases. There's no benefit to the public domain, and avionics is such a specialized discipline that the set of people capable of doing useful error or vulnerability analysis on the software probably highly overlaps with the people Boeing is paying to do said analysis in a private capacity (as they're mandated to by regulations anyway). I just don't think getting a bunch of eyes of random, generalist security researchers on it would meaningfully improve the safety and security of the planes.