Chapter 4 - Automatic Flight

Question 1

After lift-off, the A/T remains in THR HLD until:

Answer 1

400 feet Radio Altitude

Question 2

When control wheel pressure is released during CWS roll operation, the airplane will roll wings level when the bank angle is:

Answer 2

6 degrees or less.

Question 3

The Automatic Flight System (AFS) consists of:

Answer 3

the autopilot flight director system (AFDS) and the autothrottle (A/T).

Question 4

In normal operation, what provides the A/T system with N1 limit values?

Answer 4

The FMC

Question 5

The autothrottle:

Answer 5

1. moves the thrust levers with a separate servomotor on each thrust lever.
2. the A/T can be manually overridden.
3. the A/T will reduce thrust toward idle at 27 feet RA.

Question 6

During a dual autopilot ILS approach, the FLARE mode should engage at:

Answer 6

50 feet RADALT

Question 7

Which A/T modes permit manual thrust changes without A/T interference?

(2x)

Answer 7

THR HLD and ARM.

Question 8

Which mode must be armed before the second autopilot can be selected?

Answer 8

APP

Question 9

If the TO/GA switch is pressed below 2000 feet Radio Altitude during a single autopilot ILS approach:

Answer 9

1. The autopilot disengages.
2. The A/T (if armed) engages in GA mode.
3. The A/T (if armed) advances thrust levers to a reduced go-around N1.

(don’t go round)

Question 10

What pitch mode annunciates after takeoff when the autopilot is first engaged in CMD?

Answer 10

MCP SPD.

Question 11

What is the minimum altitude for selecting CMD on the second autopilot during a dual channel A/P approach?

Answer 11

800 feet RA.

Question 12

VNAV is terminated by:

Answer 12

1. selecting a different pitch mode.
2. capturing G/S.
3. reaching the end of an LNAV route.
   (PCR)

Question 13

Level change climbs and descents white using the autoflight system are made at the airspeed
displayed on:

Answer 13

the MCP

Question 14

With VNAV engaged, the AFDS pitch and A/T modes are commanded by the

Answer 14

FMC.

Question 15

If the pilot overrides the autopilot with control column force pitch input, the following occurs immediately?

Answer 15

The autopilot changes to CWS P.

Question 16

Which A/T modes permit manual thrust changes without A/T interference?

Answer 16

THR HLD and ARM.

Question 17

Minimum speed reversion is not available when:

Answer 17

1. The A/T is OFF and the AFDS is in ALT HOLD.
   
   1. G/S capture

Question 18

The use of aileron trim with the autopilot engaged is:

Answer 18

prohibited.

Question 19

LNAV automatically disconnects when:

Answer 19

1. the HDG SEL mode is engaged
2. upon VOR or localizer capture.
   
   1. reaching a route discontinuity.

(HVR)

Question 20

A/T engages automatically when following AFDS modes are engaged:

Answer 20

• TO/GA
• ALT ACQ
• ALT HOLD
• V/S
• LVL CHG
• VNAV
• G/S capture

Question 21

Changeover between IAS and Mach occurs at:

Answer 21

Approximately FL260

Question 22

Underspeed limiting symbol:

Answer 22

“A”

Question 23

Overspeed limiting symbol:

Answer 23

“8”

Question 24

IAS/MACH displays blank when:

Answer 24

• VNAV mode engaged
• A/T engaged in FMC SPD mode
• during 2 engine AFDS go–around

Question 25

IAS/MACH displays:

Answer 25

100 knots when power is first applied

Question 26

N1 Switch - Engage

Answer 26

• engages A/T in N1 mode if compatible with AFDS modes already engaged
• illuminates N1 switch light
• annunciates N1 autothrottle mode.

Question 27

N1 Switch - Disengage

Answer 27

• deselects N1 mode and extinguishes switch light
• engages autothrottles in ARM mode.

Question 28

SPEED Switch - Engage

Answer 28

• engages A/T in SPEED mode if compatible with engaged AFDS modes
• illuminates SPEED switch light
• annunciates MCP SPD autothrottle mode
• maintains speed in MCP IAS/MACH display.

Question 29

SPEED Switch - Disengage

Answer 29

• deselects speed mode and extinguishes switch light
• engages A/T in ARM mode.

Question 30

Speed Mode engages automatically when:

Answer 30

• ALT ACQ engages
• ALT HOLD engages
• V/S engages
• G/S capture occurs.

Question 31

Before the A/T is armed, it requires:

Answer 31

the OAT on the N1 page to be present.

Question 32

A/T disengagement is caused by:

Answer 32

1. moving the A/T Arm switch to OFF
2. pushing either A/T Disengage switch
3. an A/T system fault is detected
4. two seconds have elapsed since landing touchdown (dual channel)

Question 33

The MCP speed is selectable from:

Answer 33

1. 100 kts to Vmo and
2. .60M to Mmo

Question 34

The IAS/Mach window will blank when:

Answer 34

1. In VNAV
2. 2-engine go-around

Question 35

THR HLD will continue on takeoff until:

Answer 35

After passing 800’ and 18 seconds have elapsed.

Question 36

For climbs using LVL CHG or V/S, the A/T cannot command climb thrust higher than:

Answer 36

the FMC computed limit.

Question 37

MCP SPD engages automatically when:

Answer 37

ALT HOLD engages or G/S capture.

Question 38

For a dual channel approach, the A/T retard mode engages:

Answer 38

2.5 seconds after initiation of the FLARE mode or at 27’ RA, whichever is first.

Question 39

The A/T G/A mode is armed:

Answer 39

When the aircraft descends below 2,000’.

Question 40

Pressing the TO/GA switch once will:

Answer 40

Command a 1,000’ to 2,000’ per minute rate of climb at a reduced thrust G/A setting.

Question 41

Pressing the TO/GA switch a second time will:

Answer 41

Command max N1 limit thrust for the G/A.