Autoflight

Question 1

How many axis can each Autopilot control?

Why does it matter?

Answer 1

Two

Need redundancy for Cat 2 or 3 fail protection

Question 2

What does the Radio Altimeter give you during an auto land?

Answer 2

Determines when to Flare, if the RA fails you get a “No Land 3”

Question 3

When does the aircraft line up on the runway (rudder) during an autoland?

Answer 3

500’

Question 4

When do arrival speeds populate on the INIT REF page?

Answer 4

Halfway to the destination

Question 5

Anytime the VNAV page is updated what should be referenced?

Answer 5

The TOD and programed descent speeds vs STAR and “red box” speeds

Question 6

Typical approach EPR-

Answer 6

1.04-1.08

Question 7

What will put the FMC into “On Approach Mode”?

Answer 7

• An approach procedure becomes the active procedure
• Flaps extended after VNAV engaged in descent
• Less than 12nm from destination
• Missed approach point is the active waypoint

Question 8

What benefit for speed management does “On Approach” mode give you?

Answer 8

-The speed window can be opened and the system will remain in VNAV PATH.
FM 6.110.10.28

Question 9

What takes the system out of Approach mode?

Answer 9

Touchdown, Selecting GA, Overflying the missed approach point

Question 10

Why is it good to use FLCH for a low altitude level off?

Answer 10

FLCH sets a vertical speed equals to half of the altitude difference between current and planned level off altitude.

Question 11

ALT CAP vs ALT HOLD

Answer 11

CAP means it’s capturING,

HOLD means it has capturED and will hold the Altitude

Question 12

V1 calls at rotation-

Answer 12

Positive Rate, Gear Up, HDG Select

Question 13

V1 calls at 800’

work right to left

Answer 13

-“V/S 100, Set CMS, A/T arm switch off”

Question 14

V1 calls when at desired speed-

Answer 14

-“FLCH, set _ speed, max cont thrust”

Question 15

V1 calls - when can you engage the autopilot?

Answer 15

When a vertical speed is selected, in this case V/S

Question 16

If using FLCH for a low altitude level off what is a threat on a SID?

Answer 16

If you have the Top Altitude set you could blow through any “at or below” altitudes or an assigned altitude

Question 17

Does RTO distance calculations assume use of reversers?

Answer 17

No

Question 18

When looking at FMAs what does a yellow line through the pitch or roll mode indicate?

Answer 18

A fault in that mode

Question 19

Autothrottle modes-

What does EPR mean in flight?

Answer 19

The autothrotle is maintaining thrust called for by the FMS during a climb. *This is the only time EPR normally occurs during a flight

Question 20

Autothrottle modes-

What does THR HOLD mean?

Answer 20

Autothrottle is de-energized.

Thrust levers will remain in current position unless moved manually or another A/T or pitch mode is engaged.

Question 21

What pitch will “TO” mode command after liftoff

both engines operating

Answer 21

The greater of:

V2+15 -or- Liftoff speed+15

Question 22

What pitch will “TO” mode command after liftoff

If an engine fails prior to liftoff

Answer 22

The greater of:
V2-or-speed at Main gear liftoff, up to a maximum of V2+15

V2 to V2+15

Question 23

What pitch will “TO” mode command if an engine fails airborne?

Answer 23

Speed at the time of failure as long as it’s V2->V2+15

-If the commanded speed is held for more than 5 seconds the flight director will command current speed up to V2+25

Question 24

In the ASA status window what are the top and bottom windows capable of displaying?

Answer 24

Top- What the aircraft CAN do (LAND2/ LAND3)

Bottom- What the aircraft can NOT do. (No Land 3 or NO AUTOLAND)

Question 25

If the ASA widow shows LAND 3 Is that fail operational or fail passive and what does that mean?

Answer 25

LAND 3 is Fail Operational

A single fault would not prevent the autopilot system from making an auto land. (normally three autopilot systems are operating)

Question 26

If the ASA widow shows LAND 2 Is that fail operational or fail passive and what does that mean?

Answer 26

LAND 2 is Fail Passive

A single fault would not cause significant deviation from a flight path. (normally two autopilot systems are operating)

Question 27

When on an auto land approach
when could a NO LAND 3 indication be displayed?
When could a NO AUTOLAND be displayed

Answer 27

NO LAND 3- Anytime the aircraft is above 200’ RA
—> Is inhibited below 200’

NO AUTOLAND- anytime, **Is NOT inhibited

Question 28

Does the ASA system monitor airborne and ground equipment?

Answer 28

No- it is primarily and autopilot and autopilot support system monitor.

The LAND 2 or 3 annunciators do not necessarily mean the LOC or G/S systems are working properly

Question 29

Below 200’ RA what can the ASA change to?

Answer 29

Only NO AUTOLAND

Question 30

How does the auto throttle system respond to gusts that decrease speed vs gusts that decrease speed?

Answer 30

If speed is decreases it will adjust quickly.
If speed in increased it will adjust slowly.

The result is the thrust average is higher than necessary to maintain command speed

Question 31

Can the auto throttle be used without the F/D or the A/P?

Answer 31

Yes