ELECTRICAL, POWER-PLANT

Question 1

How many Generators?

Answer 1

Total 4
• 2 Engine
• 1 APU
• 1 RAT (emergency gen.)

Question 2

Green, Red and Black circuit breakers

Answer 2

Green - monitored by ECAM
Red - you cannot reset
Black - just regular

Question 3

What’s the power priority?

Answer 3

Engine, External, Apu.

Right to Left on elec. panel

Question 4

What is the minimum battery voltage?

Answer 4

25.5 V

Guarantees at least 50% charge

Question 5

What HYD systems operate Reversers?

Answer 5

• Green for #1 eng.

* Yellow for #2 eng.

Question 6

When will you see 2 igniters during Eng. start?

Answer 6

• Second Auto start attempt

* Manual start

Question 7

FADEC self powered by PMA at … N2?

Answer 7

58% N2

Question 8

When do you introduce fuel during MAN ENG Start?

Answer 8

At least at 20% N2

Question 9

NEO engine can crank up to a minute before start why?

Answer 9

To stabilize temps in the core of the engine

Question 10

How to energize FADECS on NEO engs on ground (to check oil quantity)

Answer 10

Overhead panel. MX ENG FADEC pb

Question 11

Engine warm up and cool down

Answer 11

• 5 mins before take-off

* 3 mins after landing

Question 12

3 Different thrust idles

Answer 12

1) Modulating idle (feedback from bleeds)
2) Approach idle (with ay flaps/slats position)
3) Reverse idle (higher than others)

Question 13

Do you need Blue HYD sys to operate RAT?

Answer 13

Yes. RAT runs the blue system but it needs to be operational

Question 14

How long does it take for a RAT deployment?

Answer 14

8 sec

Question 15

What buses RAT provides?

Answer 15

ESS AC and ESS DC

Question 16

At What speed will the RAT stall?

Answer 16

140-125 kt

Question 17

If Battery voltages are below the minimum, how do you charge them?

Answer 17

You have to check that BAT pb’s are ON and switch the external power ON

Question 18

What is the meaning of the green extrn AVAIL light?

Answer 18

External power is plugged in and parameters are normal, you must push the EXT PWR pb to connect it.

Question 19

If you have to charge BAT with EXT PWR, approx how long does it take?

Answer 19

20 min.

Question 20

What is the important thing to remember to avoid damage to the IDG disconnection mechanism?

Answer 20

To push the IDG pb until the GEN FAULT light comes on, but only for a Maximum of 3 sec.

Question 21

After IDG disconnection why do you get a GALLEY SHED indication on SD?

Answer 21

It is a reminder that the main galley has been shed automatically following the loss of one generator

Question 22

Can you reconnect IDG by pressing IDG pb?

Answer 22

No. The IDG can only be manually reconnected by MX

Question 23

What screens do you have in Electrical emergency?

Answer 23

PFD1 and DU (ECAM display unit)

Question 24

What does the BUS TIE pb do?

Answer 24

Isolates both sides of the electrical system

Question 25

ENGINE stabilization parameters (2/4/6/6)

Answer 25

2- 20% N1
4- 400° EGT
6- 60% N2
6- 600 fuel flow

Question 26

Is RAT a generator?

Answer 26

No. its a HYD pump that pressurizes the BLUE sys witch will pressurize the EMR GEN

Question 27

What happens if you press and hold red

A/THR buttons for more than 15 sec?

Answer 27

You will disconnect A/THR for the remainder of the flight

Question 28

Electrical Emergency Synopsis

Answer 28

• On BATT — 2 (CA PFD, E/WD)
•  On RAT — 4 (CA PFD, ND, E/WD, MCDU)
• 140-125 kts — RAT STALLS
• 100 — DC BATT ONLY (2 screens)
• 50 kts — AC ESS BUS SHED (no screens)
Still have: APU fire protection and detection, VHF1