An aircraft having a power distribution system (2, 50) and at least two engines (8, 10), the power distribution system (2, 50) comprising: - a left-hand torque transmission means for a left-hand engine and a right-hand torque transmission means for a right-hand engine, - at least one rotatable device of an environmental control system, which device is located in an interior region of the aircraft fuselage, - a left-hand distribution shaft and a right-hand distribution shaft, - a left-hand first coupling for transferring a torque between the left-hand torque transmission means and the left-hand distribution shaft as a left-hand train and a right-hand first coupling for transferring a torque between the right-hand torque transmission means and the right-hand distribution shaft as a right-hand train, - at least one electrical energy source for operating the at least one rotatable device of the environmental control system and electrical loads of the aircraft when the engines (8, 10) are at a standstill, and - a second coupling for transferring torque between the left-hand train and the right-hand train, wherein the at least one rotatable device of the environmental control system is coupled with the left-hand or right-hand distribution shaft (30, 42), wherein the torque transmission means (4,6) is movably held and is connected to at least one shaft of the respective engine (8, 10), wherein the respective torque transmission means (4, 6) extends from the shaft of the engine (8, 10) to the interior region of the aircraft fuselage, and wherein at an end pointing away from the engine (8, 10) the torque transmission means (4, 6) comprises at least one interface (12, 14) for introducing a torque. - a left-hand torque transmission means for a left-hand engine and a right-hand torque transmission means for a right-hand engine, - at least one rotatable device of an environmental control system, which device is located in an interior region of the aircraft fuselage, - a left-hand distribution shaft and a right-hand distribution shaft, - a left-hand first coupling for transferring a torque between the left-hand torque transmission means and the left-hand distribution shaft as a left-hand train and a right-hand first coupling for transferring a torque between the right-hand torque transmission means and the right-hand distribution shaft as a right-hand train, - at least one electrical energy source for operating the at least one rotatable device of the environmental control system and electrical loads of the aircraft when the engines (8, 10) are at a standstill, and - a second coupling for transferring torque between the left-hand train and the right-hand train, wherein the at least one rotatable device of the environmental control system is coupled with the left-hand or right-hand distribution shaft (30, 42), wherein the torque transmission means (4,6) is movably held and is connected to at least one shaft of the respective engine (8, 10), wherein the respective torque transmission means (4, 6) extends from the shaft of the engine (8, 10) to the interior region of the aircraft fuselage, and wherein at an end pointing away from the engine (8, 10) the torque transmission means (4, 6) comprises at least one interface (12, 14) for introducing a torque.