The L-1011 also featured a highly advanced autopilot system and was the first widebody to receive FAA certification for Cat-IIIc autolanding, which approved the TriStar for completely blind landings performed by the aircraft's autopilot in zero-visibility weather. The L-1011 used an inertial navigation system to navigate; this included aligning the navigation system by entering current coordinates of longitude and latitude.
The L-1011 also featured a highly advanced, autopilot system and was the first widebody to receive FAA certification for Cat-IIIc autolanding which approved the TriStar for completely blind landings performed by the aircraft's autopilot in zero-visibility weather. The L-1011 used an inertial navigation system to navigate; this included aligning the navigation system by entering current coordinates of longitude and latitude.