Preheat oven to 350 degrees. Spray a 9x5" loaf pan with non-stick spray, and if desired, line with parchment.
Whisk flour, baking soda, and salt together and set aside.
In a large mixing bowl, beat butter and sugar until blended. Add eggs one at a time and beat until well combined. Add banana, sour cream, milk, vanilla and coconut extracts. Beat until combined.Add flour mixture and beat at a low speed until just combined. Stir in 1/2 C coconut.
Pour batter into prepared loaf pan. Sprinkle additional 2 tablespoons coconut on top.
Bake in the oven for about 1 hour or until a knife or skewer inserted in center comes out clean. Note: Check bread after about 45 minutes. If the top has browned and the coconut pieces are looking toasty, you can cover top of bread lightly with a piece of foil. Continue baking until a toothpick inserted in the center comes out with loose crumbs, but no wet batter.
When done, remove pan from oven. Let cool on a cooling rack for 10-15 minutes and then carefully remove from pan. Whisk powdered sugar and lime juice together for the glaze and then drizzle over top. Cool for another 15 minutes before slicing.