Powerplant

Question 1

When does engine synchronization occur?

Answer 1

N1–1.5% or N2 –2.5% with the left engine as master.

Question 2

What is the engine ignition powered by?

Answer 2

System A from AC Essential Bus and System B from the Battery Bus through a static inverter.

Question 3

What are the FADECs powered by?

Answer 3

The DC electric system below 50% N2 and by a dedicated FADEC PMA alternator above 50% N2.

Question 4

What is the minimum bleed air pressure for engine start?

Answer 4

45 psi +/-3 psi.

Question 5

What is the minimum oil temperature for start on the ground?

Answer 5

-40 degrees C-.

Question 6

The CF34-8C5B1 has a normal thrust rating of ________ pounds. At APR power, this increase to ________.

Answer 6

12,670/13,790

Question 7

Bypass air from the N1 Fan produces approximately __________of the engine thrust.

Answer 7

80%

Question 8

Fuel pressure from the fuel metering unit is used by FADEC to operate

Answer 8

The variable geometry guide vanes of the N2 compressor and the Operability Valve

Question 9

During start, the thrust lever should be moved from shutoff at _________.

Answer 9

20% N2

Question 10

Starter disengagement should occur at _______.

Answer 10

50% N2

Question 11

Continuous ignition must be on if:

Answer 11

Takeoff/landing on contaminated runways

• -Moderate or greater turbulence
• -Moderate or greater rainfall
• -Vicinity of TRWs

Question 12

What will happen if both sources of power to FADEC fail?

Answer 12

The engine will shut down

Question 13

The two channels of each FADEC will never make a simultaneous input to the engine except _________________.

Answer 13

When an engine overspeed condition is sensed

Question 14

With an engine failure, FADEC will schedule One engine Out (OEO) power as follows:

Answer 14

APR power if thrust lever is in TOGA detent
MCT power if thrust lever in CLB detent
Proportional increase in the cruise range

Question 15

Alerting of a pending oil filter bypass or oil chip detection will be presented to the pilot on the EICAS system

Answer 15

FALSE–will be indicated on a panel in the AFT equipment bay.

Question 16

Gauges are available to alert the pilot to vibration exceedences in both the N1 and N2 sections of each engine.

Answer 16

FALSE–Gauges only for N1–VIB Icon will appear inside the N2 gauge

Question 17

How many different idle power settings are available from FADEC.

Answer 17

FIVE—Flight Idle, Approach Idle, Landing Idle, Reverse Idle and Ground Idle.

Question 18

How is engine oil temperature kept under control?

Answer 18

A fuel/oil heat exchanger uses cold fuel to reduce oil temperature. It also warms the fuel to keep it within limits.

Question 19

In the event of FADEC failure, the other engine FADEC can provide fuel control of both engines

Answer 19

FALSE

Question 20

One Engine Out (OEO) fuel scheduling from FADEC will occur when the N1 speed difference between the engines exceeds _____.

Answer 20

15%

Question 21

How will you know that APR power is being scheduled by FADEC?

Answer 21

A green APR icon will appear inside the N1 gauge.

Question 22

What will selection of the High Power schedule switchlight do?

Answer 22

Set MCT power on both engines. However its use is prohibited by GoJet pilots

Question 23

FADEC continues to update its power calculation during takeoff up to _____. It locks in this setting until ___________.

Answer 23

65 Kts/400 ft AGL or thrust lever moved from TOGA detent

Question 24

During a starter assisted engine start, you should not try to engage the air turbine starter if the N2 RPM exceeds ___________.

Answer 24

45%

Question 25

Engine crossbleed starts are accomplished using ___________.

Answer 25

Bleed air only from the other operating engine.

Question 26

What occurs during a thrust reverser deployment in flight?

Answer 26

The FADEC will schedule idle thrust on the engine but the thrust lever will not move.