SELF-CHECK 4 / POWERPLANT (Ch. 20)

Question 1

The PW306A engine is a ____ spool turbofan engine.

A. One
B. Two
C. Three
D. Four

Answer 1

B. Two.

Question 2

The inner shaft supports the Low Pressure (LP) compressor (fan) and is driven by a ___ stage turbine.

A. One
B. Two
C. Three
D. Four

Answer 2

C. Three.

Question 3

The outer shaft supports the four axial stages and one centrifugal stage of the High Pressure (HP) compressor, and is driven by a \_\_\_ stage turbine.
A. One
B. Two
C. Three
D. Four

Answer 3

B. Two.

Question 4

How many spark igniters does each engine have ?

A. One
B. Two
C. Three
D. Four

Answer 4

B. Two.

Question 5

The accessory gearbox is driven by the ___ rotor shaft.

A. LP rotor shaft (N1)
B. HP rotor shaft (N2)
C. AGB shaft (N3)
D. QS rotor

Answer 5

B. HP rotor shaft (N2).

Question 6

Maximum ContinuousThrust (MCT) is authorized without time limitations anytime for normal cruise operations.

A. True
B. False

Answer 6

B. False.

Question 7

When the EICAS indicator points at the yellow band, thrust should be reduced to bring the pointer to the ____ band.

A. Red
B. Yellow
C. Green
D. White

Answer 7

C. Green.

Question 8

What is the purpose of the FADEC?

A. Regulates HP rotor speed (N2)
B. Regulates LP rotor speed (N1)
C. Adjusts output based on pilot-operated Thrust lever, ambient conditions, and pilot and aircraft inputs
D. All of the above

Answer 8

D. All of the above.

1. Regulates HP rotor speed (N2)
2. Regulates LP rotor speed (N1)
3. Adjusts output based on pilot-operated Thrust lever, ambient conditions, and pilot and aircraft inputs

Question 9

When pressed, either the right or the left go-around button will:

A. Disconnect the autopilot
B. Leave the yaw damper engaged
C. Position the flight director command bar to 9º nose up
D. All of the above

Answer 9

D. All of the above.

Question 10

Which engine is chosen as the master engine when the pilot selects ENGINE SYNC?

A. The Captain’s side, because he is the master
B. The engine with the higher fan speed
C. The engine with the lower fan speed
D. None of the above

Answer 10

B. The engine with the higher fan speed.

Question 11

Is the spinner anti-iced? When?

Answer 11

Yes, constantly.

Question 12

How does the pilot synchronize the engines and what preconditions must be met?

Answer 12

The ENGINE SYNC toggle switch on the center pedestal. Thrust leversbetween idle and max climb, APR not armed, T/Rs stowed, engines within 5% of each other, slave engine at steadt state.

Question 13

When is APR triggered?

Answer 13

N1 – difference of 15%, or difference of 4% with deceleration of 8% second of N2
N2 – difference of 7.5%, or difference of 2% with deceleration of 5% second.