LnS main Instrument Panel

Question 1

What does the green arrow in the FMA (autopilot) indicate?

Answer 1

Indicates who controls the data source for the AFCS

What side it’s coupled to

Question 2

What is the function of the AT button on the ground?

Answer 2

On the ground the AT button arms the auto throttle system

Question 3

How can the auto throttle disconnect warningbe cancelled ?

Answer 3

Only by pushing one of the AT DISC buttons in the thrust levers

Question 4

How can the autopilot disconnect warnjngbe cancelled?

Answer 4

Only by pushing the yoke AP/TRIM DISC button

Question 5

What does the auto throttle mode “TO” shown in white in the bottom row mean?

Answer 5

Takeoff mode is armed

Question 6

As thrust levers are advanced for takeoff, you note that the FMA changes from white TO shown in lower row, to TO in green top row. Also AT in green now appears. Why?

Answer 6

1. TO autothrottle mode is active now

2. AT is displayed in the “engagement status” column meaning autothrottle system is engaged

Question 7

What does TO represent in the vertical mode column?

Answer 7

TO is the active vertical mode
Flight director gives pitch guidance to maintain V2 to V2+10 after liftoff
A) TO w/2 engines: V2+10
B) TO w/1 eng: FD decides V2-V2+10 depending on speed when failure occurred

Question 8

On takeoff accelerating through 60kts, you see the FMA change from TO to HOLD

What does HOLD mean?

Answer 8

HOLD is an active autothrottle mode

AT Servos are de-energized until 400’

Question 9

On takeoff accelerating through 100kts you see the FMA change from ROLL to TRACK. Why?

Answer 9

TRACK is an active lateral mode. FD gives bank commands to maintain ground track airplane was on at the moment of engagement

Question 10

What does FLCH in green indicate?

Answer 10

Flight level change is an active vertical mode

FD commands a pitch to maintain selected speed to selected altitude

Question 11

What does FLCH and LNAV in magenta indicate?

Answer 11

VNAV is now active

FMS altitude constraints will be honored in addition to altitude selector

Question 12

What does SPDe indicate?

Answer 12

Speed on elevator is the active AT mode

Question 13

How do the ATs behave in SPDe mode?

Answer 13

ATs maintain a fixed thrust setting
A) climb limit position for longer climbs
B) approx idle position for longer descents

Question 14

What does SPDt in green indicate?

Answer 14

Speed on thrust is the active AT mode

Question 15

How do the ATs behave in SPDt mode?

Answer 15

ATs vary the thrust to attempt to maintain selected speed

Question 16

What does PTH in magenta indicate?

Answer 16

VNAV PTH is the active vertical mode
FD commands a pitch to intercept & follow an FMS generated vertical path
(Path is based on FMS descent angle to meet FMS waypoint altitude constraints)

Question 17

Can PTH be active while in HDG mode?

Answer 17

No. Only LNAV

Question 18

Is VNAV PTH a climb function or a descent function or both?

Answer 18

Only a descent function

Question 19

What does GA represent in the Vertical mode column?

Answer 19

Go around is the active vertical mode
Pitch is commanded to 8 degrees until reaching target airspeed
(Both engines: pitches to maintain Vref +20)
(One eng: pitches to maintain Vac approach climb)

Question 20

On the HGS: What does the symbol mean two boxes and a line across the top?

Answer 20

AOA limit
Appears when AOA is approaching stick shaker
Referenced to the flight path symbol

Question 21

What does the greed dot on the PFD or HGS indicate?

Answer 21

With slats/flaps retracted, indicates drift down speed

With slats/flaps extended indicates ideal flap extension speed

Question 22

You see an amber course needle in your PFD after selecting the FMS button. What happened?

Answer 22

You have selected a cross side navigation source

Question 23

Is reversion to ADS3 automatic or manual?

Answer 23

Reversion to ADS 3 is automatic

Question 24

If a rejected takeoff occurs prior to 60kts will the auto brakes apply brake pressure?

Answer 24

No it arms at 60kts

Question 25

What position must the thrust levers be in to arm RTO on the ground?

Answer 25

Idle or below

Question 26

What is the function of the GND PROX TERR INHIB pushbutton?

Answer 26

Inhibits EGPWS

Avoids unwanted terrain alerts at airports not covered by EGPWS database.

Question 27

When does automatic declutter occur on the EICAS?

Answer 27

30 sec after being in a clean configuration: landing gear/ flap/slat retraction under normal conditions

Question 28

What happens when the momentary G/S INHIB button is selected?

Will it reset?

Answer 28

Glideslope alerts are manually cancelled

It will reset climbing above 2000’ RA or below 30’ RA

Question 29

What does the LG WRN INHIB button allow you to do?

Answer 29

Inhibit landing gear warnings when you have a dual RA failure

Question 30

What conditions have to be met to drain the potable water?

Answer 30

Aircraft must be airborne
Gear up
Drain masts heated

Question 31

What does ADS prove button do when pushed in?

Answer 31

Activates ADS probe heat

Allows hearing of probes in icing conditions prior to engine start