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Crj 900 > Automatic Flight Control System > Flashcards

Automatic Flight Control System Flashcards

0
Q

AFCS stands for?

A

Automatic flight control system

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1
Q

AFCS provides integration of?

A

AUTOPILOT and FD SYSTEMS

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2
Q

AFCS ststem consists of?

A

2 FCC

AUTOPILOT

2 YAW DAMPERS

AUTO ELEVATOR TRIM CONTROL and assorted servis and actuators

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3
Q

Integration of avionics system?

A

IAPS ..integrated avionics processing system

Located in avionics compartment

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4
Q

Where are the FCCs located?

A

Mounted inside the IAPS

                     IAPS

FCC1…………. …………..FCC2

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5
Q

FDs are turned on by?

A

Selecting a vertical mode
Lateral mode

Engaging autopilot

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6
Q

Sync msg remains on for

A

3sec

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7
Q

FMA?

A

ACTIVE. STDBY

LATERAL. LATERAL
…………… …………..

VERTICAL. VERTICAL

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8
Q

Lateral takeoff mode?

A

Hdg hold within 5 degrees bank
( usung hdg existing at TO)

Annunciated by green TO FMA

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9
Q

Roll mode?

A

5° or less bank angle?
Holds the heading when mode was initiated

Greater than 5° Bank angle?
Holds current bank angle

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10
Q

Onside loc capture cancels?

A

Turb mode

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11
Q

Lateral G/A mode?

A

Heading hold with 5degree bank angle

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12
Q

Pitch mode?

A

Set to current pitch angle

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13
Q

Each click of vs pitch wheel?

A

1/2 degree

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14
Q

Pitch mode is automatically selected when

A

No other vertical mode is active and the flight director is on

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15
Q

How is vertical takeoff mode selected?

A

By toga switches on the ground

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16
Q

Go around mode

A

8 degree pitch up command

17
Q

The autopilot can be disengaged manually by

A
  • AP/SP DISC switch on the control wheels
  • AP ENG switch on FCP
  • AP DISC bar on FCP
  • eithee stab trim on control whl
  • TOGA
  • YAW DAMP DISC
18
Q

AutoPilot automatically disengages when

A
  • failure of both yaw dampers
  • failure detected by FCC circuits
  • stick
  • unusual attitude
  • two seconds after a windshear warning
19
Q

How many AHRS IRS reqd for AP?

A

Both

20
Q

Vert takeoff mode?

A

Variable

However! 10 degrees when SE

21
Q

Turb mode cleared?

Re appch mode

A

Onside loc capture

22
Q

Needed to engage autopilot?

A 
Both fcc's
1 stab
1 yaw
1 ADC
2 IRS AHRS
- no instability of aircraft
23
Q

Disengage ap manually

A
  • either AP/SP DISC switch
  • AP ENG on FCP
  • AP DISC BAR on FCP
  • stab switches
  • TOGA
  • YD DISC
24
Q

AP disengage auto?

A
  • both yaw dampers fail
    • failure detected by FCC
  • stall warning
  • windshear
25
Q

In most flight modes How many FD’s are active ?

A

1

26
Q

When are both FD’s active?

A

TO/TO
GA/GA
APPR

27
Q

FCC status indicator light ?

A

Illuminates to indicate that the respective FCC has it knowledged the selection

28
Q

How many lateral modes?

A

8

TO
GA
APPR
NAV
BROLL
HDG
1/2 bank
29
Q

APPR clears?

A

TURB and 1/2 bank

30
Q

When using a Backcourse approach, what course should be selected?

A

The front course

31
Q

Overspeed protection in VS or pitch mode??

A

Over speed clacker

Reverts to IAS/mach

Speed bug pitches up to VMO -5 knOTS (Aircraft slows while capturing the airspeed)

32
Q

Overspeed protection and warning in ALTS MODE?

A

ClAcker

33
Q

Regarding configuration warnings

The warning system is armed for take off when the thrust is advanced abov

A

70 percent

34
Q

When the auto pilot is manually disengage the warning sounds for how long

A

Approximately two seconds

35
Q

Overspeed protection warning?

A

If in VS or pitch mode

An overspeed condition occurs

Overspeed Clacker sounds

Reverts to IAS/MACH mode

Speed bug Will sync to the Vmo-5

Aircraft slowly pitches to speed

4-32 systems

36
Q

Go around mode generates a pitch up command of?

A

8°

4-30

37
Q

At what altitude does indicated airspeed change to machautomatically

A

31600

38
Q

To engage the auto Pilot the following is required

A

Both FCCs

One yaw

One stab

One ADC

BOTH AHRS IRS

No significant instability of the aircraft

39
Q

How many vertical modes

A

10 vertical modes

40
Q

Lateral takeoff mode is selected by?

A

Pushing one of the TOGA switches while on the ground

Annunciated with a green TO Message in the lateral capture field on the PFD

41
Q

Fuel required to get to destination is found where or on what page in the FMS?

A

Perf page 3

Crj 900 (45 decks)

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