Autopilot Flashcards

1
Q

What is the main use of autopilot

A

To reduce pilots workload

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2
Q

How many axis can autopilot control, what are they

A
  1. Roll
  2. Pitch
  3. Yaw
  4. Collective
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3
Q

What are the 5 main components to an autopilot system

A
  • A control device
  • signal processor
  • servo to flight controls
  • control surfaces
  • sensors
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4
Q

Are aitopilots often stand alone systems?

A

No, generally part of a more complex auto flight control system (AFCS)

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5
Q

What are the main components of an AFCS

A
  • flight management
  • flight guidance
  • flight directors
  • auto pilot
  • auto thrust
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6
Q

What can a dependency on automation lead to

A

Loss of SA

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7
Q

What are the 2 main sub systems associated with the pc21 Auto flight control system

A
  • autopilot and flight director system (AFDS)

- TAD

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8
Q

What 2 axis does the AFDS control the aircraft in

A

Roll

Pitch

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9
Q

What powers the AFDS

A

Gen 1 bus

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10
Q

At what degrees of pitch and bank will the autopilot disconnect at

A

+- 22° pitch

+- 38° bank

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11
Q

How are the pitch and roll servos connected to their respective control surfaces

A

Control Cables

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12
Q

What allows the pilot to manually override servo in the event of mechanical jam

A

Mechanical slip clutch

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13
Q

What autopilot related switches are mounted on the control column

A

Pitch and roll trim switch
Tcs
Ap disconnect

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14
Q

Where is the rudder trim switch

A

Pcl

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15
Q

What is shown on hud when AP us engaged

A

Asterisk

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16
Q

What supplies the autopilot with power

A

Gen 1 bus

Batt bus

17
Q

Within the autopilot system, what does the batt bus supply

A

AP disconnect warning (AMU)

18
Q

What components input to the FGC

A
IRS
Front PFD
ADC
SFD
Control column
RIOC 3
MCP
TRIM/AIL PWR SWITCH
Safety monitors
19
Q

Pressing the AP key on the MCP does what and what symbols appear on the PFD

A

It connects 2 basic modes (pitch and roll attitude hold)

And
Aircraft reference symbol chnages
Flight director que apprears (both attitude indicator PFD)

20
Q

What are all the ways to disconnect AP

A
  • Press AP key on MCP
  • AP disconnect switch on control column
  • Either trim switch is operated for more than 1 sec
  • TCS is on. Pitch exceeds +-50° or +-75° AOB
  • FGC monitors detect parameters which exceed servo rate limits
  • stall
  • TRIM/AIL PWR SWTICH OFF
21
Q

When HDG mode is activated, how is the target heading set?

A

Rotaty switch on PFD

22
Q

How can the pilot activate AP to hold current attitude

A

By selecting AP on MCP

23
Q

What does the ALT mode allow the pilot to do

A

Intercept and hold current altitude

24
Q

How would a pilot activate AP so the current airspeed is held

A

Pressing P/S (pitch/ speed) button

25
What visual cue appears to show this has been activated
Cyan bug on PFD ASI at set speed
26
When in VS (vertical speed) mode is there a safety feature to prevent a stall if PCL position is too low
No, aircraft will stall if there is inefficient power
27
What visual cues are given to indicate VS mode is active
Cyan bug on VSI and digital readout just above guage
28
What systems does the TCS switch pause
Pitch and roll
29
For what duration
Until switch is released
30
What are the normal operating limits of AP
+- 20° pitch | +- 30° AOB
31
What is the min height for AP engagement
400ft
32
What is the min allowed height for AP disconnect in precision approach in GS mode
200ft
33
What is the minima conditions for AP operation in IFR conditions
CAT 1
34
Whats the max glideslope angle for an ILS final, in GS mode
35
If a trim monitor detects a fault what happens
Amber "AP TRIM" on MFD aural tone Attn gtrs
36
What happens if the pitch and roll servos are disconnected
Warning "AP DISCONNECT" flashing on MFD for 5 seconds