The distance from Pine Bluff to Bentonville is 172 miles, and flying it would use around 460 pounds of fuel, or 70 gallons. Since the airplane ran out of fuel while descending a little short of Bentonville, it would have used, say, 64 gallons since Pine Bluff, or 95 in all since leaving Camden. It must, therefore, have had only 45 gallons of fuel aboard before the 50 gallons were added there. Since it's only 250 nm, or roughly 100 gallons, from New Orleans to Camden, the pilot cannot have topped off at New Orleans; he must have left there with no more than 150 gallons aboard. The fuel quantity indicators must have been well down in the yellow when the airplane took off from Pine Bluff.