Yes, Absolutely. Aviation touches many disciplines: e.g. aircraft design, meteorology, civil engineering, aircraft operation, regulation, aviation business and even organic chemistry. Anything related seems fair game. We have tags. Use them.
Users bring different knowledge to the table and I don't know anyone who is an expert in everything. Users who may be experts in one or two aviation and adjacent fields, but may not have much to contribute in other related fields may advise against including things that they may not be able to contribute to. I don't think that is a good metric of whether or not something should be considered off-topic.
If something is a better fit on another site, I'd prefer to see a question duplicated rather than excluded.