Engines and APU

Question 1

What does the Engine Start Lever Control? What occurs in each position?

Answer 1

a. Ignition system
i. IDLE: Energized / CUTOFF: Deenergized
b. Spar Fuel Shutoff Valve
i. IDLE: Electronically opened / CUTOFF: Closed
c. Engine Fuel Shutoff Valve
i. IDLE: Opened / CUTOFF: Closed

Question 2

What is the purpose of the Electronic Engine Control (EEC)?

Answer 2

Sensed Flight Conditions and Bleed Air demand to Calculate N1 values. Monitors Engine Start, N1 & N2 redline
protection, Minimum Idle power settings, Start protections

Question 3

the N1 on the upper display indicator is a REV indicator. What is the color logic of this indication?

Answer 3

Green: Thrust reverser is deployed properly, Amber Reverser sleeve in transit

Question 4

How do you display the Fuel Used?

Answer 4

On the ENGINE DISPLAY CONTROL panel Toggle Fuel Flow Switch to Used

Question 5

What is indicated by the ENGINE CONTROL light?

Answer 5

. EEC detects faults in the Engine Control System, not dispatchable. When engine is on, aircraft on ground prior to
takeoff or approximately 30 seconds after touchdown

Question 6

Which light(s) indicate the EECs are in Normal Mode?

Answer 6

ON (white)

Question 7

What indicates an EGT exceedance after engine shutdown?

Answer 7

Red Box around the EGT digital readout

Question 8

How is a hot start indicated during ground starting?

Answer 8

Flashing EGT indication or (Rapid rise in EGT, EGT approaching the start limit)

Question 9

Which position(s) does a start switch need to be in for both igniters to activate in case of an engine flameout?

Answer 9

Any

Question 10

When do the EECs select approach idle with Engine Anti-Ice on?

Answer 10

Engine anti-ice selected on for either engine, or Flaps in the landing configuration

Question 11

The EECs provide redline protection for which parameters?

Answer 11

N1 and N2, Normal and alternate modes

Question 12

EECs will abort an engine start for which start malfunctions?

Answer 12

Hot start, Engine stall, EGT start limit exceedance, Wet start

Question 13

What causes the ENG FAIL alert on the N2 Guage?

Answer 13

Respective engine is operating below sustainable idle (50% N2)

Question 14

What does the APU provide?

Answer 14

AC power source Bleed air for engine starting and air conditioning

Question 15

What powers the APU Electronic Control Unit?

Answer 15

Switched Hot Battery Bus

Question 16

How long must you wait before turning the battery off after the APU is shut down?

Answer 16

2 minutes

Question 17

Will the APU start without battery power?

Answer 17

No

Question 18

What will cause the automatic shutdown of the APU?

Answer 18

Overspeed, Low oil press, High oil temperature, fire, FCU failure EGT exceed, Other system faults monitored by
the ECU

Question 19

What indicates a thrust reverser malfunction?

Answer 19

REVERSER (amber) illuminated >12s, ENG annunciator and MSTR CAUTION

Question 20

What causes a REVERSER light?

Answer 20

When the thrust reverser is commanded to stow and extinguishes 10 seconds later when the Isolation Valve
closes.

Question 21

With an EEC light in ALTN, thrust lever not in IDLE, what mode is the EEC in?

Answer 21

Soft Alternate

Question 22

What system controls maximum thrust ratings?

Answer 22

EEC