Complex sentence: Since technically it's not a shortened form of the article title or aircraft name, then it is unprintable or unprintworthy; however we put it, it is not suitable for a printed version of this encyclopedia.
Split into simpler sentences: Since technically it's not a shortened form of the article title nor aircraft name, then it is unprintable (or unprintworthy). However we put it, it is not suitable for a printed version of this encyclopedia.