Automatic Flight Control System

Question 1

The auto throttle system automatically disengages and displays the FAIL message for:

Answer 1

ATS malfunction detected

Sensor input to ATS fails

Question 2

The auto throttle system automatically disengages and displays the DISENG’D message for:

Answer 2

N1 split >= 13%
N1 speed > 98.4%
Either thrust reverser unlocks

Question 3

The auto throttle system can be manually disengaged and displays the DISENG’D message for:

Answer 3

Pressing the ATS push button on the ATS control panel

Pressing either ATS DISC switch on the forward face of the throttle lever

Question 4

A flashing amber ‘AOA LIMIT’ message in the autothrottle system (ATS) Mode Status Display (MSD) would indicate:

Answer 4

The ATS Low Speed Protection has been triggered (1.2 Vs for flap configuration in SPEED mode).

Question 5

A flashing amber ‘SPEED’ message in the autothrottle system (ATS) Mode Status Display (MSD) would indicate:

Answer 5

Airspeed is 20 KIAS below the AFCS reference airspeed, engine thrust is within 1% N1 of FMS thrust limit, and aircraft deceleration is > 0.1 knots/sec for more than 10 seconds

Question 6

A flashing amber ‘VMO LIMIT’ or ‘MMO LIMIT’ message in the autothrottle system (ATS) Mode Status Display (MSD) would indicate:

Answer 6

The overspeed warning has been activated and the ATS will retard the throttle levers for 4 seconds in an attempt to protect the VMO/MMO limit