Paphitis wrote:Oh yeh and yes.
You're talking about the Flight Management Computer. The FMC must have a current Data Base with all validated Instrument Approaches and waypoints.
Pilots enter a serious of coordinates or waypoints otherwise known as a flight plan. Most of the time, this is a pre-determined air route which you just select. Takes about 20 seconds. Pilots are however required to read out all waypoints and coordinates before accepting the flight plan.
Pilots however must perform the take off in case of a rejected take off prior to V1 decision. Then Rotate and V2. You can't activate the flight plan if you are being Radar Vectored but you can activate Standard Instrument Departures. Then the FMC flies the SID, then flies the Flight Plan, executes a Standard Arrival STAR, and Instrument Approach and descent and is capable of landing under certain conditions.
However pilots must take over at the Minimum Descent Altitude or Decision Altitude if VFR is not achieved to execute a missed approach. If VFR is achieved, the FMC can actually land the aircraft on a CAT111b Instrument Landing Approach. It will flare and even retard the thrust levers but won't engage the reverse thrust. Pilots hands are always on the controls and thrust levers no matter what.
And some companies will not allow Autoland at all despite a CAT111b ILS
The FMC can not be manipulated from the ground. Not on airliners anyway.
Drones probably have something similar to an FMC which can be manipulated from a ground station.
You have missed the point completely!
I am not talking about the FMC (Inertial navigation system) this is just another programmable computer ...... I am talking about a 'Honeywell ‘Uninterruptible’ Autopilot System'. This has been around for some years. The Aircraft Management Computers (AMC) will react to instructions from the Honeywell System and this is already installed in most modern passenger Jets. It is not too difficult to realise that if the AMC can be controlled by the Honeywell .... then it is one very small step to a full external. remote control system from a ground station.
It is the Honeywell system that you activate when you select 'Auto Pilot' , it is not a function of the FMC .... you can then more or less do what you like with the controls but .....HONEYWELL is in charge, not the Pilot or the FMC and it has its own completely independent power supplies that have no accessible breakers ..... i.e. you can't turn it off from the flght deck. The AMC just does what it is told, whether that is a pilot inputting instructions, the FMC. the Auto-Pilot or an external signal as is used during maintenance routines........... or Putin sitting in the Kremlin with his I-Pad! (These Ruskies are damn good at software and hacking ..... nothing is safe from this 'evil madman !'
http://21stcenturywire.com/2014/08/07/flight-control-boeings-uninterruptible-autopilot-system-drones-remote-hijacking/