Automatic Flight

Question 1

When does automatic changeover of IAS to Mach occur?

Answer 1

Approx FL260

Question 2

MCP condition speed symbols, what are they and where do they appear?

Answer 2

Displayed to the left of the Speed in the IAS/Mach window.

Upper-speed limiting (Flashing character A) - Minimum speed
Over-speed limiting (Flashing character 8)
-VMO or MMO limit
-LDG Gear limit
-Flap limit

Question 3

When does N1 mode automatically engage?

Answer 3

Engaging LVL CHG in a climb (Except during inhibit period for 2 and a half minutes after lift-off) and engaging VNVAV in a climb.

Question 4

If you push ALT INTV during a VNAV climb, what happens?

Answer 4

• Lowest FMC altitude constraint below selected MCP altitude is deleted
• If currently at a constraint, deletion allows a/c to resume climb (If MCP is set at a higher altitude)
  -If MCP altitude is set above current FMC altitude, FMC cruise altitude resets to MCP altitude
• FMC cruise altitude cannot be decreased using ALT INTV switch.

Question 5

Will LNAV engage in flight if selected outside of 3nm?

Answer 5

Yes, if the a/c:
- Be on an intercept of 90 degrees or less
- Intercepts route segment before the active waypoint.

Question 6

Is auto throttle a function of FCC A or FCC B or both?

Answer 6

FCCA only!

Question 7

What IRS do FCCA and FCC B get their information from?

Answer 7

FCC’s receive their heading information from the on side IRS and Roll data from the off-side IRS.

Question 8

What is the latest the 2nd A/P can be selected?

Answer 8

800’ RA

Question 9

What is the latest FLARE can be armed?

Answer 9

350’ RA

Question 10

When does A/T disconnect on an auto land?

Answer 10

2 seconds after the touchdown.

Question 11

CWS mode - pressure is applied but related prior to a bank angle of 6 degrees, what happens?

Answer 11

Autopilot rolls wings level.

Question 12

In what modes of auto throttle can you move the throttles without them “Fighting” you?

Answer 12

THR HLD and ARM

Question 13

In TO/GA mode, the AFDS commands pitch attitude in the following order:
10 degrees nose down until 60kts
15 degrees nose up after lift off until a sufficient climb rate is acquired then?

Answer 13

Pitch is commanded to MCP speed (Which should be V2) plus 20kts

Question 14

TO/GA can be pushed and will engage below what altitude?

Answer 14

2000’ RA

Question 15

What can cause thrust lever separation with Auto throttle in?

Answer 15

One ECC on “On” and one on ALTN could cause some asymmetry with the thrust levers.

Question 16

Below which altitude should FLARE mode be ARMED during Auto-land?

Answer 16

1500’ RA

Question 17

After liftoff, the A/T remains in the THR HLD until?

Answer 17

800’ RA

Question 18

What is the inhibit period after take-off before you can engage LVL CHG?

Answer 18

2 and a half minutes

Question 19

When do the flight directors disappear on landing?

Answer 19

50’ RA

Question 20

TO/GA engaged by pushing the TO/GA switch inflight below what altitude?

Answer 20

2000’ RA

Question 21

Can the T/O mode be engaged after Takeoff has commenced?

Answer 21

Yes, if
- TO/GA is pushed after 80 its, below 2000’ and prior to 150 seconds after lift-off - FD’s will pop up automatically

Question 22

At what point in take-off mode does th