Hydraulics Flashcards
1
Q
What is the normal hydraulic system pressure?
A
3000 +/- 200 PSI
2
Q
What is the normal hydraulic system quantity?
A
45% to 85%
3
Q
What is the maximum hydraulic oil temperature?
A
95 °C
4
Q
Which hydraulic pumps are engine driven?
A
1A and 2A
5
Q
How is the hydraulic system fluid cooled?
A
System 1 & 2 cooled by a ram air/hydraulic fluid exchanger
6
Q
How are the hydraulic SOVs closed?
A
engine fire push
7
Q
If the ADG deploys, which hydraulic “B” pump automatically turns on?
A
3B
8
Q
With the switches in AUTO, what condition causes the “B” pumps to turn on?
A
Whenever the flaps are not at 0°
9
Q
If the left engine fails, which hydraulic pumps are lost?
A
1A and 2B (because 2B is powered from #1 IDG)
10
Q
How is 1B powered by?
A
right side IDG
