Hydraullic

Question 0

In case of LO LEVEL alert, what happens to the cross feed valve?

Answer 0

Automatically inhibited to open

If it’s open, it closes

Question 1

What’s on the blue system?

Answer 1

Flaps
Spoilers
Nose wheel steering
Prop brake
Emergency/parking brake

Question 2

LO LEVEL alert at _______ gal

Answer 2

.67 gal

Question 3

Hydraulic system normal pressure

Answer 3

3000psi

Question 4

Green system powers what?

Answer 4

Gear

Normal braking

Question 5

If a pump fails, can one pump from the other side power the system?

Answer 5

Yes through crossfeed

Question 6

What powers the hydraulic pumps?

Answer 6

ACW

Question 7

What conditions cause the aux pump to run automatically?

Answer 7

ACW Blue pump pressure <1500psi
Prop brake off
Gear handle down
One engine running

Question 8

What psi activates the LO PR alert?

Answer 8

<1500psi

Question 9

Where is the OVHT sensor?

Answer 9

Pump case drain line

Question 10

How long does the aux blue pump run when button pressed?

Answer 10

30 sec

Question 11

How is the gear held up?

Answer 11

Mechanical uplocks

Question 12

How is the gear held down?

Answer 12

Folding center brace
Hyd pressure
Springs

Question 13

Can we use a towbarless system?

Answer 13

Nope

Question 14

When is anti skid available?

Answer 14

Above 10kts

Question 15

When do we have locked wheel protection?

Answer 15

Above 23kts

Question 16

When do we have touchdown protection for a locked wheel?

Answer 16

Less than 35kt or after 5 sec

Question 17

When is the antis kid system tested?

Answer 17

By the first officer

And also the airplane tests it in flight when you lower the gear

Question 18

When do the spoilers activate?

Answer 18

2.5 deg of roll

Question 19

What are the 3 protections that we have to prevent a wheel lockup or skid?

Answer 19

Anti skid (above 10kts)
Locked wheel protection (above 23kts)
Touchdown protection (tire spin up below 35kts or 5 seconds)