Automatic Flight

Question 1

From left to right, what are the three FMA mode annunciations?

Answer 1

Auto-throttle, Roll, Pitch of the automatic flight system

Question 2

How is control wheel steering indicated?

Answer 2

An amber CWS R or CWS P on the Flight Mode Annunciator

Question 3

How is independent flight director operation indicated?

Answer 3

Independent operation is indicated by the Illumination of both MA lights.

When independent ops terminates, the MA light remains ill’ only on the master
F/D side

-Each FCC is controlling modes for related F/D

Question 4

When do the flight directors operate independently?

Answer 4

Both FD on during:

Manual flight and,
TO/GA selected < 400’ RA
Or
APP mode with LOC and G/S captured

Question 5

Except for when APP modes (LOC/GS) are active. how many autopilots may be engaged at once?

Answer 5

One

Question 6

What would cause the A/P to disengage?

Answer 6

• Pushing Disengage
  switch (control yoke).
• Control column or wheel
  force override.
• Pushing an illuminated
  A/P Engage switch.
• Pushing the A/P
  Disengage bar down.
• Activating either trim
  switch.
• Moving the STAB TRIM
  PRI or B/U to CUTOUT.
• Either left or right IRS
  system failure or FAULT
  light illuminated.
• Loss of electrical power
  or a sensor input which
  prevents proper
  operation of the engaged
• Loss of respective
  hydraulic pressure.

“other” various scenarios:

• Pushing TO/GA in CWS or
  CMD below 2000’ RA.
• Pushing TO/GA
  in CWS or CMD at and
  above 2000’ RA with flaps
  extended or G/S
  engaged.
• One second after
  stick shaker in ALT
  HOLD, VNAV PATH
  (in a level segment),
  VNAV PATH (flaps 15 or >), V/S (flaps 15 degrees or >), or G/S (single channel only) modes.
  o five minutes after
  continuous stick
  shaker if not in one of
  the above modes.
• Five minutes after
  continuous activation of
  stick shaker if the
  autopilot has been re-
  engaged.
• Pushing either TO/GA
  switch with a dual
  channel auto-pilot
  engaged after
  touchdown.
  A/P and mode.

Question 7

When will the STAB OUT OF TRIM light illuminate?

Answer 7

Only with the Autopilot engaged and:
-The autopilot is not trimming the stabilizer correctly.
OR
- A partial failure of an FCC. Should failure occur in flight, the light illuminates after landing when ground speed
< 30 kts

Question 8

What does a flashing amber A/T alert light indicate?

Answer 8

Indicates an A/T airspeed error where airspeed differs from commanded value by +10 knots or – 5 knots and is not approaching commanded value in flight with flaps not fully up
(flaps extended)

Question 9

Which system provides the N1 limit for the A/T?

Answer 9

The A/T system operates properly with the EECs ON or in ALTN. In either case, the A/T uses the FMC N1 limits.

During A/T operation, it is recommended that both EECs be ON or both be in ALTN, as this produces minimum thrust lever separation.

Question 10

What is the auto-throttle mode when the pitch mode is V/S?

Answer 10

MCP SPD.

Question 11

The bank angle selector will limit the angle of bank in which modes?

Answer 11

• HDG SEL
• VOR
  o Use caution for test
  question VOR / LOC
  multiple choice option.

Question 12

How is LOC and GS modes armed?

Answer 12

By selecting the APP button on the MCP.

The APP switch ill’ green and:
roll mode = VOR/LOC armed
pitch mode = G/S armed
enables engagement of both A/P’s

Question 13

When is an altitude deviation alert provided?

Answer 13

When deviating by 200 feet from the selected altitude.

The amber flashing continues until:
*altitude deviation becomes less than 200 ft
*altitude deviation becomes more than 900 ft
*a new altitude is selected

Question 14

What does THR HLD on the FMA indicate?

Answer 14

Indicates that power has been removed from the Auto-throttle servos.

(the thrust levers can still be manually set by the pilots)

Question 15

After TO/GA is selected on a two-engine go around, the FD will command an initial pitch attitude of approximately how many degrees?

Answer 15

15 degree nose up until reaching programmed rate of climb.

Question 16

On a go-around with the auto-throttle armed, after the first push of either TO/GA switch. the thrust levers advance to a reduced go-around N1, to produce what rate of climb?

Answer 16

• 1000 to 2000 feet per
  minute.
• Two pushes of the TO/GA
  switch will produce Full
  go-around N1 limit.

Question 17

On a single-engine go-around, a push of either TO/GA switch will command an initial pitch of how many degrees nose up?

Answer 17

If single engine, the FD pitch commands 13° nose up. As

Question 18

What occurs in minimum speed reversion?

Answer 18

Simply put, “A/P and FD command min speed for current flap configuration” (1.3 Vs)

Minimum speed, FMC speed or selected speed whichever is higher becomes the FMS commanded speed.

AFS commands a speed 5 kts > than minimum speed. Reaching > 5 kts, speed reactivates normal MCP speed selection control

Question 19

What will disengage the A/T system?

*Question not in back of chapter

Answer 19

*Moving the A/T ARM switch to OFF
*Pushing either A/T Disengage switch
*An A/T system fault is detected
*Two seconds after landing touchdown