Powerplant

Question 1

. What actuates the stators equipped with compressor variable geometry?

Answer 1

The stators are positioned by means of fuel pressure from the FPMU.
Reference: OM Vol. 2, Section 2-10, Compressor Variable Geometry Actuation System.

Question 2

What is the power source for the engine ignition system (igniters)?

Answer 2

The PMA above 10% N2. Nothing below 10 N2%

Reference: OM Vol. 2, Section 2-10, Engine Electrical System

Question 3

Of the following thrust ratings, which is not selectable via the T/O data setting function? ALT-TO, TO, E-TO, TO-RSV

Answer 3

TO-RSV

Reference: OM Vol. 2, Section 2-10, Takeoff Data Setting

Question 4

What thrust ratings are available for the XR using the T/O data setting function?

Answer 4

ALT-TO, TO, E-TO.

Reference: OM Vol.2, Section 2-10, Takeoff Data Setting

Question 5

What is the power source of the engine FADECS?

Answer 5

The PMA at all engine speeds above 50% N2, otherwise, the FADECS are powered by the essential buses.
Reference: OM Vol. 2, Section 2-10, Full Authority Digital Electronic Control

Question 6

When approximately is fuel introduced during the engine starting sequence?

Answer 6

Fuel should be introduced at approximately 28.5% N2.

Reference: OM Vol. 1, Section 3, Engine Start Procedure

Question 7

Where can engine oil quantity be monitored?

Answer 7

MFD TO page.

Reference: OM Vol. 2, Section 2-4, Multi-Function Display

Question 8

What portion of the compressor section is equipped with compressor variable geometry?

Answer 8

The inlet guide vane and the first five stages of the compressor.
Reference: OM Vol. 2, Section 2-10, Compressor Variable Geometry System

Question 9

Of the following, which component is not located in the engine’s accessory drive gear box? Engine driven generator, oil pump, ejector pump, hydraulic pump.

Answer 9

Ejector pump.

Reference: OM Vol. 2, Section 2-10, Accessory Gearbox

Question 10

What happens when a thrust reverser deploys in flight?

Answer 10

The FADEC reduces the engine thrust to idle.

Reference: OM Vol. 2, Section 2-10, Thrust Reverser

Question 11

What happens to the engine when the FADEC in control fails?

Answer 11

The other FADEC takes over control of the engine.

Reference: OM Vol. 2, Section 2-10, Full Authority Digital Electronic Control

Question 12

What will happen to the engine in the event of an N1 overspeed?

Answer 12

The FADEC will initiate an automatic engine shutdown

Reference: OM Vol. 2, Section 2-10, N1/N2 Overspeed/Underspeed Protection

Question 13

What drives the items on the Accessory Drive Gearbox?

Answer 13

The items on the Accessory Gearbox are driven by the high-pressure spool via the tower shaft.
Reference: OM Vol.2, Section 2-10, Accessory Gearbox

Question 14

What happens when both FADECs for an engine fails?

Answer 14

An engine shutdown would occur. The engine requires at least one FADEC to operate.
Reference: OM Vol. 2, Section 2-10, Full Authority Digital Electronic Control