The Enola Gay was 7,500 kilograms overweight due to the heavy fuel load and the weight of its onboard ordinance that morning. At the controls Tibbets and his co-pilot Captain Robert Lewis carefully built the four Wright R-3350 engines to the roar of full power, released brakes and slowly began to lumber down the 2,500-metre runway. When the huge bomber named ‘Enola Gay’ after Tibbets’s mother, reached the end of the runway it turned 90 degrees and was pointed in the direction of the Japanese islands some six hours’ flight time away. “It took every ounce of horsepower, every metre of tarmac to get the 60,000 kg aircraft airborne.”Īt approximately 2.45am on AugUSAF pilot Colonel Paul Tibbets, taxied the silver Boeing B-29 Superfortress towards the end of the floodlit runway ‘A’ at North Field, Tinian Island in the Mariana’s.