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Spirit Airbus A320 Training > APU > Flashcards

Flashcards in APU Deck (21):
1

APU service ceiling?

- FL410

2

Were is the APU?

- In the Tail unpressurized

3

How does the APU run?

- Has a computer which controls normal operations with automatic protection.

4

N speed limitation?

- N speed reaching 107 degrees red auto shut down.

5

When will N speed become amber?

- 102 degrees will indicate amber

6

Max EGT for APU?

- 699 Amber
- Max EGT Calculated goes red will auto shut down

7

When you see XX PSI replacing bleed pressure means?

- Air data inertial reference unit 2 is not available or is selected off.

8

When does AVAIL come on?

- N speed 99.5% or if above 95% more than 2 sec.

9

Where are APU Fire indications at?

- Panal near nose gear
- Over head panel Guarded Push Button

10

If aircraft has not been powered in the past 6 hours what do you have to do?

- You must check status of the ships batteries for required voltage of 25.5 or greater.

11

If ships batteries is are less than 25.5 volts?

- Must charge for 20 min with external power before being able to start APU.

12

Time required to wait until pressing START?

- At least 5 second (not required to wait for Flap opening)

13

What can't you see APU battery start only?

- Can't see low oil level before start.
- APU page can't be displayed

14

How long for APU start?

- Available 1 min after selecting start

15

How long will APU run for shutdown?

- 2 min cool down. (can stop shutdown anytime during 2 min)

16

How long do you need to wait after APU shutdown to turn batteries off?

- Wait 2 minutes after AVAIL light goes out.

17

Max altitude for APU start?

- 25,000 feet

18

Max altitude for bleed air powering 1 Pack?

- 20,000 feet

19

Max altitude for bleed air powering 2 Packs?

- 15,000 feet

20

How man factors does the APU computer control?

- 16 different factors

21

APU fire bottle?

- Will be discharged by the computer if crew does not intervene