Having been crew for 7 years (not as long as a lot of you guys I know) I have never heard passengers been called SLF except for on PPRuNe. The problem with a public forum for people within a specific industry is that anyone can view it and see the slang terms should they actually be used anywhere. Most industries have different slang terms for their customers, rightly or wrongly however they do exist and always will, but anyone under the impression that we call all out passengers SLF, take a deep intake of breath and relax. We prefer to just call you passengers. Non-gender specific and simple. Whether or not that is superseded by another word though......
