Cat IIIb Autopilot Disconnect
Perhaps some of the pilots on this forum could help out a techie with an operational query?! I'm currently looking at Cat IIIb performance requirements for a potential future generation of landing systems.
I am interested in knowing at what point on a Cat IIIb landing do you disconnect the autopilot? Is it as soon as you get the main gear on the ground or do you keep it locked in through roll out until the aircraft has slowed enough for you to safely use visual cues to keep the aircraft on the runway?
Also, once you have disconnected the autopilot do you still use the localiser to keep you on the runway until you find the exit taxiway?
TIA