In a large bowl, combine the flour, sugar, salt, baking soda, and cinnamon.
In another bowl, beat the eggs, oil and vanilla; add pineapple and bananas.
Stir into the dry ingredients just until moistened. Pour into two greased 8-in. x 4-in. loaf pans.
Bake at 350 for 60-65 minutes or until golden brown and a toothpick remains clean when inserted into the center.
If you notice that the tops are starting to get browned, yet the tooth pick does not come clean, cover with a piece of foil and continue baking to prevent top and the sides from getting too dark.
Cool for 10 minutes before removing from pans to wire racks.
Modified from a recipe at playing with sugar.