Autoflight

Question 1

The Autoflight system consists of the:

Answer 1

Flight directors, the auto throttle & the auto pilots

Question 2

Flight Directors & Auto throttle can be used in ?

Answer 2

All phases of flight

Question 3

When you engage the auto pilot, you engage all …….. auto pilots

Answer 3

3

Question 4

The auto flight system through the….

Answer 4

Mode control panel (MCP)

Question 5

Auto flight modes are displayed as ?

Answer 5

FMA’s on top of the PFD

Question 6

What are the two auto flight modes?

Answer 6

LNAV & VNAV

Question 7

When using LNAV & VNAV, the FMC & the auto flight system will fly the most ………………… flight profile from climb through descent to your IAF.

Answer 7

Economical

Question 8

‘FLT DIR’ annunciates when the FD is on & the AP is ………….

Answer 8

Not engaged

Question 9

FMA order

Answer 9

A/T, roll modes, pitch modes

Question 10

Is there an annunciation for the auto throttle armed?

Answer 10

No, just the position of the A/T Arm switches on the MCP

Question 11

What does the bank limit switch do?

Answer 11

In auto, the bank limit varies between 15 & 25 degrees depending on airspeed.

Question 12

How do you engage the A/T & AP/FD system in either t/o mode or GA Mode?

Answer 12

Pushing either TO/GA switch

Question 13

The TO/GA switches tell the auto flight system to engage…..

Answer 13

The A/T, roll & pitch in the TO/GA mode

Question 14

When you’ve advanced the thrust levers to 55% N1 & pushed the TO/GA switch to engage the A/T for t/o, the
A/T engages in …………

Answer 14

THR REF to advance the thrust levers to t/o thrust (TO, TO1, TO2 as selected)

Question 15

With thrust reference engaged, moving the thrust levers req’s a ………….. overriding force of the auto throttle servos.

Answer 15

Constant.

As soon as the thrust levers are released, the A/T positions the. Back to the selected limit.

Question 16

At …….. knots, the A/T annunciation changes to ………..

Answer 16

80 knots, HOLD

Question 17

With HOLD annunciated, the A/T servos are ………….. The thrust levers can now be …………… positioned without interference from the A/T

Answer 17

Inhibited, manually

Question 18

After lift off, the Flight Director (AFDS) commands a pitch attitude to maintain a target speed …………

Answer 18

V2 + 15 or the airspeed at rotation + 15, whichever is higher, up to a maximum of V2 + 25

If the target speed exceeded for more than 5 seconds - Target speed adjusted to new speed not to exceed V2 + 25. (Selected speed & speed bug remain at V2)

Question 19

With LNAV armed, it activates when the airplane is above ………ft radio altitude & within ……… nm of, or on an intercept heading to & approaching, the active route leg

Answer 19

50 ft radio altitude,

2.5 nm

Question 20

LNAV mode gives ……….. commands to fly the flight plan route

Answer 20

Roll

Question 21

With VNAV armed, it engages at ……….. ft above the runway elevation

Answer 21

400 ft

Question 22

When VNAV engages what happens to the IAS/MACH window? Indicating what?

Answer 22

The IAS MACH windows blanks, indicating the FMC is now controlling airspeed.

Question 23

Climb scenario - With the selection of FLCH & THR annunciated, the A/T sets thrust based on the req’d altitude change. The A/T will attempt to make the change in …… mins while maintaining the MCP speed

Answer 23

2 mins

Question 24

When THR appears as the A/T annunciation, thrust is controlling …………..

When SPD appears with the pitch annunciation, ……….. controls airspeed, so airplane pitch is adjusted to maintain the speed selected in the ………. window.

Answer 24

Vertical speed

Pitch

IAS/Mach

Question 25

For descent in FLCH mode, the A/T mode first changes to …….. & adjusts power to get a ….. min descent. Once the A/T’s have set the descent rate they enter the …….. mode. The pilot can adjust power to change the ROD.

Answer 25

THR 2 min HOLD

Question 26

A/T’s will change from HOLD to another A/T mode when there is an automatic change in the ……….. such as capturing an altitude or, ……………..

Answer 26

Pitch mode, when selecting another pitch mode e.g VS

Question 27

If the AP & both FD switches are turned off the A/T mode will be ……….

Answer 27

Speed (SPD)

Question 28

Anytime the A/T is in the HOLD mode, the A/T servos are inhibited & ………………..

Answer 28

The pilot can set the thrust levers manually

Question 29

HOLD can occur automatically in descent, but NOT in climb unless in …………… & thrust levers are moved to idle

Answer 29

FLCH SPD

Question 30

An altitude alert occurs when within ……. feet of the MCP altitude

Answer 30

900 ft

Question 31

After level off, an altitude deviation alert occurs ……… ft away from the MCP altitude

Answer 31

200 ft

Question 32

An altitude deviation alert clears when either:

Answer 32

The airplane returns to within 200 ft of the selected altitude or, descends more than 900 ft from the selected altitude

Question 33

When approaching the MCP altitude, altitude automatically engages, the A/T engages in ……. & now controls airspeed

Answer 33

SPD

Question 34

The annunciation, SPD, indicates what?

Answer 34

Which mode is controlling airspeed

Question 35

What happens if ‘ALT HOLD’ is pushed?

Answer 35

The a/c initiated a level off to the altitude when the HOLD switch was pushed.

Question 36

How do you engage the heading select?

Answer 36

By pushing the heading select switch .

Question 37

Once the track select or heading select is engaged, turning the heading selector to a new heading turns the a/c ?

Answer 37

In the direction the selector knob was turned.

Question 38

If you push the heading/track HOLD switch what happens?

Answer 38

The current heading/track is maintained

Question 39

The BANK LIMIT selector only works on …………… modes

Answer 39

Heading & track select modes

Question 40

How do you disconnect the auto throttle?

Answer 40

1. Position the A/T arm switches to OFF or, 2. Push an A/T disconnect switch on the thrust levers (1 on either side). Either switch disengaged both servos

Question 41

If disconnected by the A/T arm switches, the A/T is no longer armed & ……………… If disconnected by the A/T disconnect switch, the A/T remains …………

Answer 41

None of the A/T modes are available. Armed. Pushing FLCH, VNAV or TO/GA engages the A/T or, by pushing the auto throttle engage switch engages in the mode appropriate to the currently engaged pitch mode.