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787 Systems > Auto Flight > Flashcards

Auto Flight Flashcards

1
Q

How does the autopilot move the flight control surfaces?

A

Fly-by-wire

aileron, flaperons, spoilers, elevators

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2
Q

What is the progression in communication from the autopilot

A

Autopilot
Primary flight computers PFC’s (Autopilot commands to flight commands)
Actuator Control Electronics ACE’s
Actuators

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3
Q

Where does the feedback to the flight controls come from?

A

Backdrive is generated by the PFC to the backdrive actuators

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4
Q

What are the Auto Throttle Modes

A 
HOLD
IDLE
SPD - Speed
THR - Thrust
THR REF - Thrust Reference
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5
Q

What approaches have autoland capability

A

ILS and GLS

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6
Q

What is IAN

A

Integrated Approach Navigation

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7
Q

What is the MCP

A

Mode control panel

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8
Q

What do you see when you test the F/D switch on the preflight?

A

TO/GA | TO/GA

FLT DIR

Pitch 8 deg
Roll centered

(Green on both the FMC and the HUD)

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9
Q

What indicates a mode change?

A

Green box around mode for 10 sec

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10
Q

what is FLCH

A

Flight level change

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11
Q

What is the min alt for Vnav mode?

A

> 400 AGL

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12
Q

At what altitude does the APP mode not disengage by selecting another mode

A

1,500 AGL (RA)

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13
Q

What are the default modes for Roll and Pitch

A

Roll - HDG HLD or TRK HLD

Pitch - V/S or FPA

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14
Q

What is the only way to disengage the LOC/GS (APP) below 1,500 ft

A

disconnecting the AP and turn off the FD

or TO/GA switch

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15
Q

What do yo set in the MCP during the preflight

A

V2 speed
DG after T/O
ALT

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16
Q

What can be UL

A

airspeed
DG
ALT

can be uplinked

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17
Q

What moves the UL to the upper window

A

XFR - Transfer

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18
Q

What is the ASA

A

AFDS Status Annunciator

displayed just above the attitude indicator
FLT DIR, A/P, LAND 3, LAND 2, NO AUTOLAND

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19
Q

What does each ASA mode mean

A

FLT DIR - FD and A/P engaged
A/P
LAND 3 - Full autoland even with a single fault
LAND 2 - Autoland even with a single fault
NO AUTOLAND - unable to make a autoland

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20
Q

What are ways to disconnect the A/P

A

button on Yoke
bar on MCP
force on control column
Rudder pedals force during LAND 3 or 2

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21
Q

How is a degradation of a Mode indicated

A

a Yellow line through the affected mode

removal of the respective steering bar on FD

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22
Q

What is the difference between LAND 3 and LAND 2

A

LAND 2 allows a level of redundancy that a single fault cannot cause a significant deviation from the flight path

LAND 3 allows a level of redundancy that a single fault cannot prevent the A/P from maning and automatic landing

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23
Q

When are EICAS aural alerts inhibited

A

On T/O below 200 ft

all messages not affecting safety of flight

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24
Q

On the Ground, during preflight, when either flight director switch is selected on …

A

FLT DIR and steering bars are displayed on the onside PFD and TO/GA is displayed on the FMA roll and pitch windows on both PFD’s

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25
Q

Can the A/P be engaged on the ground with flaps extended

A

no

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26
Q

How do we control the A/T

A

MCP and CDU (Control Display Unit)

CDU - Lower MFD - CDU

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27
Q

What are the 4 ways to engage the A/T

A

TO/GA < 50 kts with flap > 0
A/T switch >400 ft
FLCH - in flight
VNAV - in flight

28
Q

What does it mean if you see
L SPD | HDG SEL | ALT
in the FMA

A

L SPD only Left A/T is engaged at speed mode

29
Q

When will the A/T automatically engage

A

A/P disengaged and FD are turned off

A/P or FD on and in VNAV, FPA, V/S, ALT, G/S and:
speed is less than FMC for 1 sec
thrust is less than the Ref Thrust

30
Q

When will A/T not automatically engage?

A

Pitch mode - FLCH or TO/GA
< 400 ft on T/O
< 100 ft on LDG

31
Q

at slow speeds what will cause the A/T to increase the thrust?

A

Vma or MCP speed set

which ever is greater

32
Q

After manual A/T disengagement how can you reselect?

A

A/T
FLCH
VNAV
TO/GA

33
Q

When will A/T disconnect occur

A

Reverse raised to reverse idle
over ridden during manual landing
Fault
both eng shut down

34
Q

THR REF

A

Used in T/O and VNAV climbs

REF - the set limit in EICAS

35
Q

THR

A

Used in FLCH and TO/GA

Used to maintain vertical speed required by the pitch mode

36
Q

SPD

A

Used in Level flight

targets the speed set on the MCP
will not exceed VMO, MMO, Flap, Slat, Gear speeds

37
Q

IDLE

A

Used in VNAV PTH descent

IDLE changes to HOLD when thrust levers reach idle

38
Q

When in VNAV mode where do we change the speed

A

CDU

39
Q

How do you quickly override the VNAV speed set in the CDU

A

push the Speed selector button and the IAS speed will appear, adjust as required

(pressing it again will blank the IAS and return contorl to the VNAV and CDU)

40
Q

During landing automatic or manual landing IDLE power will be set Aprox…

A

25 ft

41
Q

Which autothrottle mode with not reposition the thrust levers after the pilot has manually moved them?

A

HOLD

42
Q

If the FD switches were missing during preflight when can the TO/GA be engaged

A

> 80 kts by pressing the TO/GA

Below 50 kts the only function of TO/GA switches is A/T engagement

43
Q

What is the target of TO/GA just after lift off

A

< 5 ft - Wings Level

> 5 ft - Ground Track

44
Q

When does HUD guidance become active?

A

Runway centerline

HDG within 45 deg

45
Q

When is TO/GA armed in flight?

A

Leading edge slats extended
G/S captured

(indication on the EICAS GAin green above N1)

46
Q

When can the LNAV and VNAV be armed for T/O and when is it engaged?

A

LNAV Before T/O
50 ft

VNAV 400 ft

47
Q

What is FAC on the LOC/FAC button

A

Final Approach Course

For Non ILS approaches

48
Q

What is the max LOC/FAC intercept

A

120 deg

same for B/CRS

49
Q

When does ROLLOUT mode automatically arm?

And Engages?

A

< 1,500 ft
Autoland 2 or 3 annunciated

engages with WOW

50
Q

How do you turn on the TO/GA mode on the ground?

A

turn on either FD Switches

51
Q

What conditions will arm the TO/GA mode in flight

A

Slats extended or G/S capture which ever comes first

52
Q

How far away will the LNAV capture the active leg

A

2.5 nm

53
Q

in windshear what does TO/GA target?

A

15 deg nose up or just below the pitch limiter which ever is lower

54
Q

on eng fail after T/O what does TO/GA target

A

before lift off - V2 or rotation speed which is grater

after lift off - V2 or current airspeed which ever is greater

55
Q

What will change the target airspeed during windshear

A

if current speed is above selected speed for > 5 sec it becomes the new target

(up to target +25)

56
Q

What happens to the modes if you hit TO/GA after lift off

A

clears:
LNAV
VNAV
A/T goes to THR REF

57
Q

What rate of climb does the TO/GA pitch mode require

A

2,000 fpm

58
Q

In a GA what does a 2nd push of the TO/GA do

A

changes A/T mode to THR REF and FULL power is available

removes LNAV

59
Q

AT TO/GA level off what speed is targeted after level off

A

Flap placard - 5 kts
250 kts if flaps up
target speed in IAS if set after TO/GA pressed

60
Q

What are the 3 VNAV modes

A

VNAV SPD
VNAV PTH
VNAV ALT

61
Q

When does the MCP altitude not change the FMC altitude?

A

50 nm to TOD

62
Q

What are the V/S and FPA limits

A
  • 8,000 to + 6000 fpm

- 9.9 to + 9.9

63
Q

What does the Altitude HOLD switch do?

A

Hold present altitude

64
Q

What is Flare mode

A

Mode available in LAND 2 or 3
brings to a smooth and automatic land and touchdown
Armed 1,500 ft displayed on FMA under G/S
engaged at 50 ft
thrust to idle at 25 ft (IDLE in FMA)

65
Q

What is Autopilot Flight Envelope Protection and what are its indications?

A

protection against:
Stall
Overspeed
Bank Angle

(EICAS - AUTOPILOT, yellow line through Vertical and lateral modes)

66
Q

That is the A/T thrust mode after the first push of the TO/GA switch during the GA

A

THR

787 Systems (19 decks)

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