Preheat the oven to 350 degrees and oil a 8 1/2-inch by 4 1/2-inch loaf pan.
Mix the flour, salt, baking soda and baking powder in a bowl.
In a stand mixer or with a hand mixer, beat the oil and the sugar on high speed for about 2-3 minutes.
Beat in the flour until the mixture resembles brown sugar
Beat in the flax-water mixture and applesauce
Fold in the mashed bananas and chopped pecans.
Pour the batter into the loaf pan and spread evenly. Bake about 50-55 minutes until a toothpick inserted in the center of the loaf comes out clean.
Cool on a rack for about 10 minutes and then unmold and let cool completely on a rack.