I found this recipe on liquor.com.

gin, maraschino liqueur, crème de violette, lemon juice⁣
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The Aviation was introduced in Hugo Ensslin’s self-published 1916 book, Recipes for Mixed Drinks. For a number of decades after that, the Aviation was made without the crème de violette, a liqueur that was hard to come by. So it got to be known as a pale yellow drink in a coupe glass. Then in the early 2000s, the craft cocktail renaissance had bartenders looking into the drink’s history, and once again making the drink purple and violet-ty.⁣
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This is one of those drinks that is unmistakable when you see it, even for me, a cocktail newbie. And I was unsure if I would like it, because I don’t usually like anything flower-flavored. The recipes all say “Don’t overdo it on the crème de violette unless you want it to taste like handsoap!” ⁣
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It doesn’t taste like handsoap, it is lovely. This single cocktail makes it worth buying the bottle of Rothman & Winter Creme De Violette Liqueur. Not sure, however, why my drink is more blue than purple…the photos I see of Aviations on the internet are usually purple.⁣