7 - Engines

Question 1

Engine Start Selector - Auto

Answer 1

• start valve closes and ignition terminates when selector moves from GND to AUTO at 50% N2
• selected igniter(s) operate continuously when slats are extended or EAI on

Question 2

Engine Start VALVE light on -

Answer 2

valve is not in proper position

does not open with Start Selector in GND, does not close at 50% N2

Question 3

Engine Start Selector - FLT

Answer 3

both igniters operate continuously

regardless of Ignition Selector position

Question 4

How do you identify a hung start?

Answer 4

N2 does not increase for 5 sec

Question 5

What do fuel control switches control?

Answer 5

fuel valves (engine/spar) and ignition

Question 6

What do ENG VALVE and SPAR VALVE. lights indicate?

Answer 6

valve not in position required by Fuel Control or Engine Fire switches

Question 7

When does Stby Eng Indicator activate in AUTO? (3)

Answer 7

AC power lost

both EICAS fail

CRT has failed on the ground and STATUS selected

Question 8

Starter Limits

Answer 8

• 5 min

- 1.5 min cooling/min of operation

Question 9

Minimum duct press for pneumatic start

Answer 9

30 psi

Question 10

Eng Start VALVE light (when does it illuminate?)

Answer 10

• not in position required by Start Valve Selector

- open with N2 above 50%

Question 11

Eng Start Selector: (what does it do?)

• GND
• AUTO
• CONT
• FLT

Answer 11

• opens start valve/arms igniter(s) until 50% N2
• closes start valve/igniter(s) off, selected igniter(s) CONT when flaps extended or TAI ON
• selected igniter(s) on continuously
• both igniters in both engines CONT

Question 12

What powers the EECs?

Answer 12

dedicated permanent magnet alternators

Question 13

What protection do EECs provide in

Normal -

Alternate -

Answer 13

• overboost, overspeed
• overspeed

NO overtemp