[nradov]

And who would pay for the Supplementary Type Certificate for every single aircraft model out there, including many that were built by manufacturers that no longer exist? I don't think you understand how this stuff actually works.

[arghwhat]

Equipment certification for aircraft no longer in production is not at all related to the simplicity of AM. Certification complexity would have been exactly the same if FM had been selected as the standard back in the day.

[nradov]

You're not making any sense. FM radio wasn't a practical option at the time. Do you even know the history of how this stuff was developed?