One FMS is not in agreement with the other. What happens?

Which modes of operation exist in Fly-By-Wire systems?

In a datalink system, the downlink communications consist in transmitting data:

In case of a Radio Altimeter (R/A) failure, is the ability to perform an automatic landing affected?

How does a pilot disconnect the autopilot in an aircraft equipped with a sidestick?

 1- By pushing or pulling the sidestick hard.

 2- By pressing the A/P button on the glareshield.

 3- By pressing the takeover pushbutton.

 4- By moving the thrust levers.

Concerning an IRS: 

 1 - the aircraft may be moved during the alignment 

 2 - the aircraft must not be moved during alignment

 3 - exceptionally, the alignment can be done in flight. 

 The combination that regroups all of the correct statements is:

Which of the following can be displayed on a typical mechanical ADI?

 1. Air speed

 2. Roll attitude

 3. Pitch attitude

 4. Altitude

 5. Flight Director command bars

 6. Glideslope

Which parameter does the Air Data Computer use as an input to calculate TAS?