Ch.4 (Auto Flight)

Question 1

What is the name of the display where the Flight Mode Annunciators appear?

Answer 1

Primary Flight Display (PFD)

Question 2

What does the CMD (green), annunciated on the PFD mean?

Answer 2

One or both autopilots are engaged

Question 3

When does a rectangle around a Flight Mode Annunciator appear?

Answer 3

Mode change highlight. Active for 10s after each engagement

Question 4

How does an FMA display an Armed mode?

Answer 4

Small white letters at the bottom of the flight mode annunciation boxes

Question 5

What are the names (from left to right) of the Flight Mode Annunciators?

Answer 5

Auto throttle, roll pitch

Question 6

*Which FMA display annunciation indicates that power has been removed from the autothrottle servos during take off?

Answer 6

THR HLD?

Question 7

Pushing an illuminated mode switch on the Mode Control Panel (MCP) does what to the mode?

Answer 7

Deselects the mode

Question 8

What is displayed by turning a Flight Director switch ON?

Answer 8

Displays command bars on the respective pilots attitude indicator if command pitch and roll modes are engaged

Question 9

What is displayed by turning a Flight Director switch ON?

Answer 9

Displays command bars on the respective pilots attitude indicator if command pitch and roll modes are engaged

Question 10

How is the master FCC determined?

Answer 10

• No Auto Pilot engaged: First flight director turned on is the master
• With one of both APs: First auto pilot in command becomes the master

Question 11

What are the required conditions for AP engagement?

Answer 11

• No force is being applied to the control wheel

- Stab trim auto pilot cutout switch is at NORMAL

Question 12

What does the STAB OUT OF TRIM (amber) light indicate?

Answer 12

Auto pilot failing to trim the stabilizer correctly

Question 13

When does the AP disengage light illuminate steady red?

Answer 13

• AP engagement attempt is made but fails
• Stabilizer out of trim below 800’RA on dual channel approach
• ALT ACQ mode inhibited during AP go around if stabilizer not trimmed for single AP operation
• Disengage light test switch held in position 2
• Automatic ground system tests fail

Question 14

What does the A/T LIM indication (white) on the Upper Display unit mean?

Answer 14

The FMC is not providing the A/T system with N1 limits. The A/T is using a degraded N1 thrust limit from the related EEC

Question 15

When is the MCP IAS/MACH display blank?

Answer 15

• VNAV mode engaged
• A/T engaged in FMC SPD mode
• During 2 engine AFDS go-around

Question 16

While flying an RNP departure passing 10,000’, you have selected LVL CHG, with 250 in the
IAS/MACH window on the MCP, what will be the PITCH mode FMA annunciation?

Answer 16

MCP SPD

Question 17

What triggers/causes the MCP IAS/MACH display to automatically and manually switch between indicated airspeed and Mach number?

Answer 17

Automatically switches at approximately FL260. Change over (C/O) switch changes it manually

Question 18

The bank angle selector set maximum bank angle for AFDS operation in which ROLL modes?

Answer 18

HDG SEL and VOR modes

Question 19

Engaging LNAV outside of 3 NM from an active route requires what intercept criteria?

Answer 19

• Be on intercept course of 90* or less

- Intercept route segment prior to active way point

Question 20

After engaging LVL CHG for a climb, what does the FMA annunciate for the AT mode?

Answer 20

N1

Question 21

After localizer and Glide slope capture, what will exit the APP mode?

Answer 21

• Pushing a TOGA switch
• Disengaging AP and turning off both FD switches
• Retuning a VHF nav receiver

Question 22

You are on autopilot climbing from 10,000 to FL200, in VNAV, with 20,000 in the FMC CRZ page and MCP Altitude window. Passing 11,000 you select ALT HLD, what will the aircraft do?

Answer 22

The aircraft will level at the barometric altitude it was at when the ALT HLD switch was
pressed

Question 23

*What will happen after activating TO/GA switch above 2,000’ RA with flaps up and G/S not
active?

Answer 23

Nothing?

Question 24

When is glide slope capture inhibited?

Answer 24

Prior to localizer capture

Question 25

After pushing TO/GA once, on a dual A/P approach prior to touchdown, what will the roll
mode command?

Answer 25

Current ground track. Roll mode annunciation will be blank

Question 26

After pushing TO/GA once, on a dual A/P approach prior to touchdown, what rate of climb will the N1 thrust provide?

Answer 26

1000 – 2000 FPM climb

Question 27

With the second push of TO/GA, on a dual A/P approach prior to touchdown, what N1 thrust
is commanded?

Answer 27

Full Go-around N1 limit

Question 28

When will the overspeed or underspeed limiting symbols appear in the MCP speed window?

Answer 28

When a commanded speed cannot be reached

Question 29

What type of deviation alerting is available when deviating from the selected altitude?

Answer 29

At 200’ of deviation, a momentary tone sounds and the current altitude box flashes
amber. Amber flashing continues until deviation is less than 200’ or greater than 900’ or
a new altitude is selected