POSTA is a device that aids the transfer of a wheelchair passenger into their seat. It integrates the seat cushion from the aircraft seat with the device eliminating any lifting required to board the passenger. Before a flight, POSTA device is positioned next to a modified seat where the seat cushion is able to be transferred onto the device. It is then wheeled off the aircraft and into the boarding gate. Once the passenger is transferred onto the device in the boarding gate, they are then wheeled onto the aircraft and position next to the same seat, a guide rail from the device then folds down onto the modified seat frame of the aircraft seat. The passenger then slides across via rollers underneath the cushion. Once across, the armrest is folded down, locking the cushion into the seat frame, and the device is detached from the seat. This process is then reversed when it comes time to disembark. The POSTA device also allows for a backwards transfer. This can prove beneficial for seats