the fuel in the centre fuel tank was nearly completely depleted, while the fuel tanks in the wings remained full. The fuel tanks in the wings were, somehow, not used at all by the pilots. Due to this finding, investigators issued another recommendation to Dana Air, which stated that a minimum of 2000 lbs of fuel must be maintained in the centre fuel tank of the aircraft on landing at any destination. Though there was no evidence that fuel exhaustion was the cause of the crash, as the recordings revealed that the crew had reported a total of 26,000 lbs of fuel on board, the investigation on the issue was still ongoing. Later on, investigators made a major breakthrough. Breakthrough On 6 October 2013, Dana Air Flight 0348, an MD-83 flying from Port Harcourt to Lagos, registration 5N-SAI, reported troubles with the aircraft's engine during its climbing phase. The crew reported the exact same problem that the crew Flight 0992 had faced; an engine that was unresponsive with the commanded thrust. The pilot had noticed the abnormality during the previous leg and thus he asked the flight engineer to observe with him in the cockpit. During the climb, he noticed that the engine had suffered slow acceleration. The engine took about 30 seconds to accelerate from idle power to about 60% rather than the usual 6 seconds. Contrary with the action of Flight 0992, the crew of Flight 0348 reported the problem to the ATC and declared emergency. The aircraft landed safely and the engine was sent for a teardown. The engine of Flight 0348 had just been overhauled by the contractor on 11 April 2013. As the engines of 5N-RAM and 5N-SAI had been overhauled by the same company; the Millenium Engine Associates Inc (now renamed as Global Engine Maintenance LCC), the engine was shipped to Miami for further examination. Result from the teardown revealed that the engine of 5N-SAI (Flight 0348) had suffered the exact same damage with the engines of 5N-RAM (Flight 0992). The malfunctioning engine of the aircraft, the right engine, had suffered fractures on its fuel manifold. The said manifold had fractured on the secondary inlet tube, causing the tube to be separated from its fuel nozzle. Fuel leak could be seen from the engine's fan and the engine was also not responsive to the commanded thrust. The AIB discovered that the fuel manifold had