Praetor Power Plant

Question 1

How many Full Authority Digital Electronic Controls (FADEC) does each engine have?

Answer 1

Two single channel FADEC’s

Question 2

Where are the engine indications and alerts displayed?

Answer 2

On the engine indication and crew alerting system (EICAS)

Question 3

Which position of the ignition selector knob allows the FADEC to control the ignition system depending on engine requirements.

Answer 3

AUTO

Question 4

Which thrust lever position provides the maximum thrust rating available for dual or single engine operation?

Answer 4

MAX

Question 5

Which thrust lever position selects the takeoff and go-around thrust mode and settings?

Answer 5

TO/GA

Question 6

What does pressing the EVENT MARKER button cause the ECU (FADEC) to do?

Answer 6

Records a total of three minutes (two minutes before pressing the event button and one minute after the event marker button is pressed)

Question 7

When is OAT on the EICAS indication displayed?

Answer 7

Up until the takeoff run

Question 8

What are the thrust reversers used for and during what phase of flight?

Answer 8

An on-ground additional braking device used for the landing and RTO only

Question 9

Is backing up the airplane with reverse thrust allowed?

Answer 9

No

Question 10

Upon landing when should the thrust reversers be stowed?

Answer 10

40kts

Question 11

When are the thrust reversers available?

Answer 11

With WOW signal indicating that the airplane is on the ground and a wheel speed

Question 12

What icon on the EICAS indicates the current status of the thrust reverser?

Answer 12

A REV icon

Question 13

What color icon indicates that the thrust reversers are commanded and in transition?

Answer 13

An amber REV icon

Question 14

Where is the IGNITION status displayed?

Answer 14

On the EICAS

Question 15

What does a green IGN indicate?

Answer 15

The ignitions are commanded on

Question 16

What icon on the EICAS indicates that the igniters are commanded to OFF?

Answer 16

A cyan IGN OFF

Question 17

Where can the oil level be accurately read?

Answer 17

Either in the sight glass or measured via Remote Oil Level Sensor (ROLS)

Question 18

When can the oil level be accurately read?

Answer 18

From 5 to 30 minutes after shutdown

Question 19

Is the engine oil quantity indication visible with an engine running or in flight?

Answer 19

No it isn’t

Question 20

What is the maximum oil consumption rate of the engine per hour?

Answer 20

0.04 quarts per hour (or one quart per 25hours)

Question 21

List the three sources of air pressure that the Air Turbine Starter can use for an engine start

Answer 21

The APU
An opposite engine
ground air supply

Question 22

What is the purpose of the Automatic Takeoff Thrust Control System (ATTCS)?

Answer 22

To provide automatic thrust increase if the ATTCS is previously armed and any one of the following conditions is true on takeoff or go-around:
-OEI condition is detected (N2 difference between engines is greater than 15%)
-Loss of engine cross communication
-Wind shear is detected
-Thrust lever is moved to the MAX position

Question 23

When is the ATTCS function available?

Answer 23

When WAI is ON “ICE PROT” mode is in “ALL”

Question 24

Which takeoff ratings may be selected by the flight crew prior to takeoff?

Answer 24

The full rated mode (T-01) and the one de-rated mode (TO-2)

Question 25

List the engine power settings that may be selected by the flight crew

Answer 25

-Take off/Go-Around (TO/GA)
-Maximum continuous (CON)
-Climb (CLB)
-Cruise (CRZ)
-maximum reverse (for landing and rejected takeoff

Question 26

What are the starting and motoring limitations

Answer 26

-Max accumulated time-five minutes;
-Max consecutive cycles- three
After reaching five minutes of accumulated time or three cycles (whichever occurs first) combining consecutive engine starting in motoring, 15 minutes of cool down time is required prior to an additional engine start motoring

Question 27

What are the starting duty cycle limits?

Answer 27

-Maximum time of 80seconds

Question 28

How many consecutive starts are allowed before a cooling time of 15 minutes is required prior to additional starts or motoring

Answer 28

-Three

Question 29

Can the engine be started with an ITT above 450 degrees celsius? If so, what must be accomplished prior to start?

Answer 29

Yes, dry motor the associated engine for 30 seconds prior to start

Question 30

When can HP thermal bow occur? If an engine restart is desired within that period of time, what is the recommended procedure?

Answer 30

When engine starts are initiated between 15 and 180 minutes after an engine shutdown. Dry motor the associated engine prior to start for 15 seconds or until N2 reaches 23% (whichever occurs first). After completion of this procedure, a normal engine start sequence can be initiated any time after 3 minutes and before 40 minutes have elapsed