Anyone know what is the function for the NTC Sensor on a 411? We picked up a job and all the controllers have the NTC input wire from the landing system disconnected. My guess is they are some kind of check for the NTT and NTB sensors. There is no operational description on the NTC input in any manuals. When the NTC wire is connected the elevator will get position errors at the terminal landing every time. Anyone have any ideas??