A seat for an aircraft, comprising: a seat pan, having a seat pan front edge and a seat pan rear edge; a backrest, having a backrest top edge and a backrest bottom edge, wherein the backrest bottom edge is articulately disposed adjacent to the seat pan rear edge; a headrest, having a headrest top edge and a headrest bottom edge, wherein the headrest bottom edge is articulately disposed adjacent to the backrest top edge; a tracking device disposed beneath the seat pan and being attachable to a floor of the aircraft, the tracking device comprising a first pair of rails (132,134) permitting the seat pan to translate in a lateral direction, inboard and outboard in relation to the aircraft, and a second pair of rails (122,124) permitting the seat pan to translate in a longitudinal direction, fore and aft in relation to the aircraft; a swivel connected between the tracking device and the seat pan, permitting the seat pan to rotate with respect to the tracking device; a first set of trucks that ride on the first pair of rails (132,134); and a second set of trucks connecting the first pair of rails (132, 134) to the second pair of rails (122, 124), the second set of trucks permitting the first pair of rails (132, 134) to slide freely along the second pair of rails (122, 124); wherein the tracking device comprises a longitudinal tracking segment comprising the second pair of rails (122,124) and a lateral tracking segment comprising the first pair of rails (132,134), wherein the longitudinal tracking segment and the lateral tracking segment are coplanar, wherein the longitudinal tracking segment is attachable to the floor of the aircraft, and wherein the swivel is disposed on a frame which connects to the first set of trucks that ride on the first pair of rails (132, 134). a seat pan, having a seat pan front edge and a seat pan rear edge; a backrest, having a backrest top edge and a backrest bottom edge, wherein the backrest bottom edge is articulately disposed adjacent to the seat pan rear edge; a headrest, having a headrest top edge and a headrest bottom edge, wherein the headrest bottom edge is articulately disposed adjacent to the backrest top edge; a tracking device disposed beneath the seat pan and being attachable to a floor of the aircraft, the tracking device comprising a first pair of rails (132,134) permitting the seat pan to translate in a lateral direction, inboard and outboard in relation to the aircraft, and a second pair of rails (122,124) permitting the seat pan to translate in a longitudinal direction, fore and aft in relation to the aircraft; a swivel connected between the tracking device and the seat pan, permitting the seat pan to rotate with respect to the tracking device; a first set of trucks that ride on the first pair of rails (132,134); and a second set of trucks connecting the first pair of rails (132, 134) to the second pair of rails (122, 124), the second set of trucks permitting the first pair of rails (132, 134) to slide freely along the second pair of rails (122, 124); wherein the tracking device comprises a longitudinal tracking segment comprising the second pair of rails (122,124) and a lateral tracking segment comprising the first pair of rails (132,134), wherein the longitudinal tracking segment and the lateral tracking segment are coplanar, wherein the longitudinal tracking segment is attachable to the floor of the aircraft, and wherein the swivel is disposed on a frame which connects to the first set of trucks that ride on the first pair of rails (132, 134).