APU Limitations

Question 1

How many?

Answer 1

One, Garrett GTCP-36-150RJ

Question 2

Indications and colors for APU EGT?

Answer 2

APU EGT 'C
Limit: 743
Red: > 743
Amber: 713 to 742
Green: 0 to 712
Starting: 974

Red: Maximum and minimum limitations
Amber: Caution Range
Green: Normal Operating Range

Question 3

Indications and colors for APU RPM?

Answer 3

APU RPM %
Limit: 107
Red: > 107
Amber: 101 to 106
Green: 0 to 100

Red: Maximum and minimum limitations
Amber: Caution Range
Green: Normal Operating Range

Question 4

Minimum ambient temperature for starting a cold soaked APU on the ground?

Answer 4

-40’C

Question 5

APU Start on Battery

Start, Max Time On, Followed By

Answer 5

Start 1:
Max time on 30 seconds
Followed by 2 min. off

Start 2:
Max time on 30 seconds
Followed by 20 min. off

Start 3:
Max time on 30 seconds
Followed by 2 min. off

Start 4:
Max time on 30 seconds
Followed by 40 min. off

Question 6

APU Start Using
DC Power
(Start, Max Time On, Followed By)

Answer 6

Start 1:
Max time on 15 seconds
Followed by 2 min. off

Start 2:
Max time on 15 seconds
Followed by 20 min. off

Start 3:
Max time on 15 seconds
Followed by 2 min. off

Start 4:
Max time on 15 seconds
Followed by 40 min. off