The aerospace sector has from time to time been characterised as "way too small volume for extensive automation". Nonetheless, Market 4.0 ideas are actually investigated by quite a few aerospace providers, and systems have been produced to boost efficiency where the upfront cost of automation cannot be justified. 1 example https://vita-pro-nobis96800.ageeksblog.com/30346914/the-2-minute-rule-for-lever-4-0