I don't work in aviation, but you can produce much better documentation by following at least the spirit of this vs. the specific grammars and vocabulary.

Engineers and IT people are often not very strong in writing ability, and there are many non-native speakers in technology. I've seen situations where "Cute" documentation with TV references (infrastructure placement was captured by types of disney vs. looney tunes characters) and lots of implied context. Having a style guide that forces simplicity can be a high value.