HYD Panel ( 4 EVEN) Flashcards
1
Q
What are the three HYD systems called?
A
- GREEN, BLUE and YELLOW Systems
2
Q
How is each hydraulic system normally powered?
A
- GREEN – engine driven
- BLUE – electrically driven
- YELLOW – engine or electrically driven
3
Q
When does the BLUE pump normally operate?
A
- After the first engine is started
4
Q
If the BLUE system lost pressure, how would pressure be restored?
A
- The RAT must be deployed. It does not deploy automatically upon BLUE system loss of pressure, so if needed, it must be manually deployed with the RAT MAN ON pushbutton.
5
Q
What can be done to correct low ACUM PRESS indication?
A
- On the ground, coordinate with ground personnel and turn on the YELLOW ELEC pump
6
Q
With no HYD system power, how can the FWD CARGO door be opened?
A
- By using a hand pump
7
Q
What causes the PTU to operate in if in AUTO?
A
- Differential pressure of 500 psi between GREEN and YELLOW systems
8
Q
When is the PTU inhibited?
A
- On the ground with ENG MASTER levers split and either the nose wheel steering disconnected or the parking brake ON
- For 40 seconds after cargo door is operated
9
Q
What are some users of the GREEN system?
A
- Landing gear
- Normal brakes
- Slats and flaps
- ENG 1 thrust reverser
10
Q
What are some users of the BLUE system?
A
- Emergency generator
- Slats
11
Q
What are some users of the YELLOW system?
A
- Flaps
- Nose wheel steering
- Alternate brakes
12
Q
What do the priority valves do in the HYD systems?
A
- Removes hydraulic power from the heavy users and protects the flight controls.
13
Q
What would cause a FAULT light in the ENG 1 pump?
A
- Pump low pressure
- Over temp in reservoir
- Low air pressure in reservoir
- Low quantity
14
Q
If the FAULT light illuminates in the ENG 1 pump, what would identify the specific reason for the FAULT?
A
- ECAM will display the reason
