In Class Oral Review

Question 1

If the main buses are powered, is the ESS BUS also powered?

Answer 1

Yes

Question 2

Where is the APU battery located?

Answer 2

Aft equipment bay

Question 3

Where is the main battery located?

Answer 3

Nose compartment

Question 4

How many ways to keep fuel balanced?

Answer 4

Auto, manual, gravity (press the low tank button-the one you wanna send fuel to)

Question 5

Balance fuel using Auto

Answer 5

Uses XFLOW pump
Flows through cross tank
System detects low on one side, automatically sends 200 lb +50 lb to low side
We don’t touch buttons to cause this

Question 6

Balance fuel using Manual

Answer 6

Uses XFLOW pump
We have to turn it on & off again
Select MANUAL & which tank you wanna send fuel to

Question 7

Balance fuel using gravity

Answer 7

Open valve and it sends it from high tank to low tank

Question 8

What happens when we hit L or R BOOST PUMP button?
When does the boost pump turn on?
What would INOP mean in regards to BOOST PUMPS?

Answer 8

Arms the boost pump (plugs vacuum in).
Low pressure is sensed at the main ejector.
Not armed or pump is broken.

Question 9

How many fuel ejectors are there?

Answer 9

2 main ejectors
2 scavenge ejectors on each side
2 transfer ejectors

Question 10

When would the transfer ejectors send fuel from the center tank to the mains?

Question 11

Min bulk fuel temp in flight

Answer 11

-40 degrees C

Question 12

Min bulk fuel temp before takeoff

Answer 12

-30 degrees C

Question 13

Min engine fuel temp

Answer 13

5 degrees C

Question 14

What would happen if the service people dont turn off the DC service light?

Answer 14

It will drain APU battery

Question 15

First flight of day, turn on BATTERY MASTER, what do we do after that?

Answer 15

Wait 30 seconds then do fire system test
11 lights total
Advisory message: FIRE SYS OK

Question 16

After FIRE SYS TEST

Answer 16

Check batteries, DC electrical synoptic, make sure there is 22V on both main and APU battery

Question 17

Then we go to start the APU, what does that look like?

Answer 17

Press PWR FUEL switchlight
Door open
In bite status
Gauges (will appear on EICAS display 2)
SOV open status (APU)
Then select START/STOP switchlight
Then we get APU start message
Starter becomes available for loading at 99% RPM + 2 seconds

Question 18

What’s the APU generator rated at?

Answer 18

40KVA 115 400HZ up to 41,000 ft

Question 19

When does continuous ignition automatically come on?

Answer 19

Stall

With stick shaker

Question 20

What are we looking for during normal engine start?

Answer 20

Fuel pumps ON
Engines START (hold START button until it illuminates)
RIGHT ENGINE START status message
Set timer
Limitation is 90 seconds
20% N2 & 120 degrees ITT (needs to be below this)
If you’ve reached 90 seconds and haven’t achieved this criteria, hit stop
Then we can introduce fuel
Engine start complete
Repeat for other engine when you’re in line for takeoff
Limitation-each engine needs to go through 2 mins stabilized at ground idle before full thrust

Question 21

How do we shut down an engine?

Answer 21

Thrust lever shut off

Fuel pumps off

Question 22

Selecting ENG FIRE PUSH switchlight does what things?

Answer 22

Closes fuel/bleed air/hydraulic SOVs, arms affected side squibs, affected IDG taken offline

Question 23

Can the IDG disconnect manually without us hitting the DISC switchlight?

Answer 23

Yes, if the shaft becomes sheared or the solenoid melts

Question 24

If you hit AC ESS XFER switch

Answer 24

Means BUS 2 is now powering ESS BUS

Question 25

AUTO XFER FAIL means

Answer 25

Generator overcurrent or bus fault

Question 26

Where does AC BUS 1 normally get power from? (Describe AUTO XFER function)

Answer 26

Look at synoptic (on side, inside, cross side, outside)
GEN1
APU GEN
GEN2
External AC
Same for BUS 2 (on side, inside, cross side, outside)