Auto Flight

Question 1

How can the LLZ and GS modes be deactivated after LOC & GS capture?

Answer 1

• Disconnecting A/P & A/T and turning both F/D’s Off or:
• Selecting GA mode

Question 2

When will the F/D command bars display when F/D not on?

Answer 2

• When GA switch is pushed and airspeed is ABV 80kts with the flaps not retracted
• Can be removed by cycling the switch
• Will command GA Thrust limit

Question 3

At what altitude can the Autoland status annunciators not change?

Answer 3

• BLW 200ft except to indicate a NO AUTOLND condition

Question 4

SPD in A/T FMA means?

Answer 4

• A/T controlling thrust to maintain SPD in window or:
• If VNAV engaged, the SPD programmed by the FMC

Question 5

What are the 5 modes of A/T?

Answer 5

• N1
• SPD
• VNAV
• FLCH
• GA

Question 6

What are the exclusive modes of A/T?

Answer 6

• N1
• SPD

Question 7

What will be indicated on FMA when A/P is set to CMD after Take off with FD off?

Answer 7

Bank angle less than 5 degrees:

• V/S and HDG HOLD

Bank angle greater than 5 degrees:

• V/S and ATT
• When greater than 30 degrees AFDS returns to 30 degrees

Question 8

What is the default mode of A/T?

Answer 8

• SPD

Question 9

What mode does the A/T system not reposition the thrust levers?

Answer 9

• THROTTLE HOLD

Question 10

What happens with A/T in a GA if A/P and F/D’s are off?

Answer 10

• Controls to go-around reference thrust subject to flap and Vmo speeds

Question 11

When does LNAV immediately activate when intercepting a route?

Answer 11

• Within 2.5 nm

Question 12

When does G/A mode ARM and how is it displayed?

Answer 12

• Flaps out of up **or **Glideslope capture
• No real annunciation, reference thrust limit just changes to G/A

Question 13

When does ROLLOUT arm and engage?

Answer 13

• BLW 1500ft armed displays and it engages below 5ft

Question 14

When does the AFDS capture the LLZ?

Answer 14

• Within 120’ of LLZ course

Question 15

When does SPD change from IAS to MACH in a CLB and then MACH to IAS in a descent?

Answer 15

• Mach .80 and 300kts

Question 16

What are the 3 methods to return from THR-HOLD to FLCH mode

Answer 16

• A/T is set off then ARM
• Select other pitch mode then re-select FLCH
• Thrust levers advance manually, set to reference bug

Question 17

When does the ALT light illuminate on the Altimeter?

Answer 17

• Between 300 and 900ft
• White light displays on top right of Altimeter
• ALT ALERT- Amber light displays on the main panel next to standby AItimeter

Question 18

What will display on the FMA for FLCH in a CLB or DESCENT also in ALT HOLD?

Answer 18

CLB/DESCENT

• FLCH , SPD

ALT HOLD

• SPD, ALT HOLD

Question 19

In VNAV what happens when A/C levels out in CRZ

Answer 19

• TMSP changes reference thrust to CRZ

Question 20

If SPD is set in the A/T window what controls A/C SPD?

Answer 20

• Thrust (power control)

Question 21

In a descent what will be indicated if done in FLCH?

Answer 21

• FLCH then THR-HOLD / SPD

Question 22

What is indicated in a VNAV CLB?

Answer 22

• N1 / VNAV SPD

Question 23

What happens in a level off in VNAV

Answer 23

• SPD (commanded by FMS) / VNAVPTH

Question 24

When will the VOR/DME SW become AUTO?

Answer 24

• Only when HSI mode selector is set to MAP or PLAN

Question 25

When does the VOR/DME always indicate manual?

Answer 25

• Always at VOR, ILS mode

Question 26

When is HDG up indicated on HSI and when is TRACK up indicated?

Answer 26

• HDG UP = VOR, ILS mode
• TRACK UP = MAP, PLAN mode

Question 27

When does RWY align mode begin?

Answer 27

• 500ft RA with LAND 2/3 annunciated

Question 28

What slip will the autopilot initiate during RWY align mode?

Answer 28

• A maximum bank angle of 2 degrees when the crab angle exceeds 5 degrees