Engine

Question 1

Which Engines are installed on the airplane?

Answer 1

General Electric – GE Passport 20-19BB1A (High Bypass 5.6:1).

Question 2

How much Thrust the Engines supply at Sea Level?

Answer 2

18,920 lb of thrust at Sea Level up to 30°C (ISA + 15°C).

Question 3

What is the ITT for Ground & Air Start?

Answer 3

• Ground: 750° C / Air: 875°C.
• Quick Windmill Relight: 975°C.
• Note: Max Continuous/Idle: 995°C.
  Max Takeoff: 1,035°C.
  Max Go-Around: 1077°C (15 seconds).

Question 4

What are the Engines Takeoff Thrust Limitations?

Answer 4

• Takeoff Thrust OEI: 10 minutes.
• Takeoff Thrust AEO: 5 minutes;

Question 5

How does the pilot know when the engine limitations have been exceeded?

Answer 5

The Numbers turn Red on EICAS.

Question 6

What are the Engines Duty Cycles?

Answer 6

• Start Attempts 1 & 2: 5 min ON / 5 min cooldown after each start;
• Start Attempts 3 to 10: 5 min ON / 15 min cooldown after each start.

Question 7

At what RPM should Start NOT be attempted?

Answer 7

56% N2.

Question 8

What is the Minimum Engine Oil Temperature for Engine Start?

Answer 8

Minus 40°C.

Question 9

What is the Minimum Engine Oil Temperature before selecting TO Power?

Answer 9

+43°C

Question 10

What is the Maximum Engine Oil Temperature permissible for Continuous operation?

Answer 10

Continuous Operation: +160°C (+165°C / 15 minutes).

Question 11

How is Thrust Management controlled throughout all phases of flight?

Answer 11

• FADEC (Full Authority Digital Engine Control) which is a dual-channel system.
• Each FADEC channel is supported by an EEC (Electronic Engine Controller).

Question 12

Describe the 3 Main Components of the N1 assembly:

Answer 12

• Blisk (Fan Assembly);
• 3-Stage LPC (Low Pressure Compressor);
• 4-Stage LPT (Low Pressure Turbine).

Question 13

Describe the 2 Main Components of the N2 Assembly:

Answer 13

• 10-Stage HPC (High Pressure Compressor);
• 2-Stage HPT (High Pressure Turbine).

Question 14

How is the FADEC powered once one engine is running?

Answer 14

PMA (Permanent Magnet Alternator) serves as the Dedicated Electrical Power Source.

Question 15

What is the Maximum Engine Oil Consumption for Each Engine?

Answer 15

0.31 US Quarts/Hour (0.29 Liters/Hour).

Question 16

What is the usable capacity of Each Engine Oil Tank?

Answer 16

• 11.6 US Quarts (10.9 Liters) / 16 hrs of flight = 5 Qts minimum.
• Note: Oil Qty below 4.3 Qts=> EICAS Advisory msg “L(R) ENG OIL LO QTY”.

Question 17

How is Engine Oil Cooled?

Answer 17

By 2 Fuel/Oil and 2 Air/Oil Heat Exchangers.

Question 18

How is the Oil Quantity checked?

Answer 18

• Oil Quantity is displayed on the OIL REPLENISH Tab in the SERVICE Synoptic;
• An Oil Level Sight Gauge on the side of the Reservoir.

Question 19

Where is the Replenishment Oil Tank located?

Answer 19

Aft Equipment Bay.

Question 20

What is the Capacity of the Oil Replenishment Reservoir?

Answer 20

6 US Quarts (5.7 Liters).

Question 21

When can the Engine Oil Levels be accurately checked?

Answer 21

• Between 15 and 60 minutes after the Engine Shutdown.
• REPLENISH Softkey is available ONLY within 15 to 60 minutes after shutdown.

Question 22

When and How is Engine Oil Replenishment allowed?

Answer 22

• 1. On the Ground with Engines Off;
• 2. Between 15 & 60 minutes after Engine Shutdown;
• 3. Prohibited when OAT is -12°C or colder;
• 4. Via the OIL REPLENISH Tab on the SERVICE Synoptic;
• 5. ORS (Oil Replenish Synoptic) Reservoir “OIL QTY” should be Green before servicing.

Question 23

Which Fuel ShutOff Valve closes after selecting the ENGINE RUN Switch to OFF?

Answer 23

• HPSOV within the Fuel Metering Unit.
• Note: The FIRE PBA closes the Firewall Fuel SOV.

Question 24

When is the Approach Idle commanded by the FADEC?

Answer 24

• 1. In Flight;
• 2. Gear Down and Locked or
• 3. Slat/Flap 2 (Flaps are above 5 degrees).
• 4. No Steep Approach Mode is selected.
• Note: Steep Approach 4.5 to 5.5 Degrees (Steeper Approach 3.5 to 4.5 Degrees).

Question 25

What are the 2 AutoStart Air Envelopes and associated Airspeeds?

Answer 25

- ATS ENVELOPE (CAS message): < 250Kt. - WINDMILL ENVELOPE (CAS message): >250Kt, N2>7.5%. (255kt recommended)

Question 26

What is the Engine “Quick Relight” Function?

Answer 26

- If the ENGINE RUN Switch is selected OFF then back ON, the FADEC will recover the existing pwr setting. - Fuel Schedules and ITT Limits are adapted for each Quick Relight scenario.

Question 27

When does the ENG FLAMEOUT message appear?

Answer 27

When the N2 reduces abnormally and an Automatic Relight has failed.

Question 28

What is the Maximum Altitude for an Airborne Engine Start?

Answer 28

30,000 ft.

Question 29

What is the Maximum Altitude in flight for an APU-Assisted Engine Start?

Answer 29

23,000 ft.

Question 30

What are the Limitations on the Thrust Reversers?

Answer 30

- 1. Must Not be selected inflight; - 2. Must Not be used for backup the airplane; - 3. Not Permitted for Touch-&-Go.

Question 31

How are the Thrust Reversers controlled and actuated?

Answer 31

- Controlled by the FADEC; - Actuated by the respective EDP (Engine Driven Hydraulic Pump) - Note: The Reverser only operates when the associated engine is operating and the EDP is producing pressure.

Question 32

What will occur if a Thrust Reverser becomes inadvertently Unlocked?

Answer 32

- 1. Red Master Warning Lights flashing; - 2. Aural Warning “L (R) Reverser Unlocked”; - 3. Red L (R) REVERSER UNLOCKED CAS message; - 4. Red REV icon appears in N1 gauge; - 5. FADEC limits thrust to idle (regardless of thrust lever position).