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Cirrus SR20 (L3) > POH Systems > Flashcards

POH Systems Flashcards

1
Q

To assure ALT restart power is available if ALTs fail in flight, what should you know regarding the BAT switches?

A
  • DO NOT TURN OFF BAT SWITCHES!

ALTs in the SR20 are self exciting and once started, provide self-generated field power to continue operating in case of a BAT failure.

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2
Q

Items on the circuit breaker panel Essential buses are powered by:

A

ALT 1
ALT 2
BAT 1
BAT 2

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3
Q

Items on the circuit breaker Main buses are powered by:

A

ALT 1

BAT 1

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4
Q

Items on the circuit breaker Non-Essential buses are powered by:

A

ALT 1

BAT 1

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5
Q

You’ve lost ALT 1 and BAT 1 (Main buses and Non-Essential buses are down). What items are you left with?

A

Essential Buses:
(ALT 2, BAT 2)

  1. Annun/Engine Instruments
  2. COM 1/GPS 1
  3. AI/TC #1
  4. HSI/PFD #1
  5. Stall warning horn
  6. Autopilot
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6
Q

What kind of flaps does the SR20 have?

A

Electronically controlled, single-slotted flaps

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7
Q

What will trigger the Oil Warning Light in the annunciator panel to come on?

A

High oil temp (240 deg F or more)

Low oil pressure (10PSI or less)

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8
Q

What will trigger the Oil Warning Light in the annunciator panel to come on?

A

High oil temp (240 deg F or more)

Low oil pressure (10PSI or less)

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9
Q

What does the prop-governor do?

A

Automatically adjusts prop pitch to regulate prop and engine RPM.

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10
Q

How does the prop governor work? (POH 7-55)

When you increase the throttle, what happens to oil pressure and pitch?

A
  • Senses engine speeds through flyweights
  • Senses throttle settings through cable linkage

Increased throttle = less oil = lower pitch = higher rpm

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11
Q

True or False: Any change in airspeed or load on the prop results in a change in prop pitch.

A

TRUE

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12
Q

Where do you find Fuel System info in the POH for the SR20?

A

POH 7-56 and 7-57

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13
Q

Tell me about the autopilot in the SR20.

A

POH 7-88/7-93

If installed, STEC 55

  • 2-axis autopilot
  • Marker Beacon Receiver
  • IFR approach certified GPS(s)
  • VHF communications transceivers
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14
Q

What can the AP on the SR20 do? (4 things)

A
  1. Heading Hold and Command
  2. NAV/LOC/GPS/GS tracking, high and low sensitivity, and
    automatic 45° -course intercept
  3. Altitude Hold and Command;
  4. GPS Steering (GPSS) for smoother turns onto a course or
    during course tracking.
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15
Q

Pros and Cons: Fuel Injected vs Carberated

A

lol

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16
Q

How does the AP manipulate the trim?

A

Sets the trims to neutral

17
Q

SR20 flight controls (ailerons, rudder, etc) are designed with a ____ ____ ____ system

A

spring cartridge return system

18
Q

What kind of AP does the SR20 have installed?

A

S-TEC X 55
2 - axis
.. uses trim

19
Q

Components of the ADAHRS:

A

3-axis solid state gyro and accelerometer system (combined with a magnetometer)

Magnetometer is connected to OAT probe in wing

1 pitot tube

2 static ports

G430 is connected

20
Q

The flaps are operated electrically by:

A

A motor that moves a tortion-bar (POH 7-32)

21
Q

Explain the SR20s fuel system:

A

Main tanks gravity feed into the Collector tanks.

Gascolator is located under nose (fuel sump)

Metering Valve boosts fuel into cylinders

22
Q

Tell me about the Hydraulics System

A

4 Master Cylinders

Differential braking is used for taxi, no nosewheel steering

23
Q

Which ALT is belt driven? How is the other driven?

A

ALT 1 is belt driven

ALT 2 is gear driven, located more rearward in the cowling

24
Q

ALT 1 charges ____ buses and has ___V and ___A

A

MAIN
28V
75A

25
Q

ALT 2 charges ____ buses and has ___V and ___A

A

ESS
28.75V
20A

26
Q

Which Alternator has a higher Voltage, and why?

A

ALT 2 has a higher voltage to prevents ALT 1 from charging ESS bus while its functioning normally

27
Q

How many volts and amps is BAT 1. Where is BAT 1 located?

A

24V
10A
Located under cowling

28
Q

How many volts and amps is BAT 2. Where is BAT 2 located?

A

BAT is is actually 2 - 12V batteries that are connected together.

Produces 7A.

Located in the back of the a/c near baggage compartment.

29
Q

Oil minimum and maximum? Where should you check during preflight for leakage?

A

6-8 qts

Check under bottom of cowl for leaks

Cirrus SR20 (L3) (13 decks)

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