Abstract: In one embodiment, an aircraft comprises a fuselage 1, a passenger cabin 3 housed therein, and a primary opening 13 for accessing the cabin 3. The opening 13 is located in a central region extending from 20% to 80% of the total cabin length. The opening 13 has a width greater than 1 m, so as to be suitable for the side-by-side, simultaneous passage of at least two adult persons walking therethrough. In another embodiment, an aircraft comprises a passenger cabin 3, having a first set of seats 7a, and a second set of seats 7b separated from the first 7a set of seats by a passageway 15 transverse to the length of the cabin 5. The first and second sets of seats 7a, 7b each face towards the passageway 15. These embodiments may enable a reduction in turnaround time.