\\\On complex aircraft, with auto-land capability the Captain and F/O's Flight Directors should be used for monitoring the signal activity of the 2nd & 3rd channels. Its a majority voting system, you see. Best to know what all three of the channels are up to...\\\
Or, as on just slightly
more advanced types (Lockheed TriStar) there are four...
Those F/D's are certainly required, by certification, for LVP.
Best to make
sure they work as advertised.
