Hydraulics

Question 1

Hyd RF indication below?

Answer 1

76%

Question 2

How much required in each fuel tank to cool hyd elec pumps?

Answer 2

760kg

Question 3

Nominal hyd pressure

Answer 3

3000PSI

Question 4

Min and max hyd pressure

Answer 4

2800-3500PSI

Question 5

Recommend hyd max fill

Answer 5

98%

Question 6

When does LGTU operate?

Answer 6

Airborne
Gear lever UP
Gear not up or locked
No1 RPM N2 < 50%

Question 7

Low Qty of Standby Hyd

Answer 7

Less than 50%

Question 8

When does PTU operate

Answer 8

Airborne
B pressure drops (2350PSI or less for 0.5s)
Flaps not up

Question 9

When will Standby Hyd activate?

Answer 9

Airborne or wheel speed Gt 60kts
Loss of System A or B
Flaps extended
FLT CTRL Switch A or B
OR
FFM activates

It will switch to:
Standby Rudder
Standby Yaw Damper
Thrust reversers

Question 10

What comes off standby Hyd

Answer 10

Standby Rudder
ALT LE Flaps/Slats
Standby Yaw Damper
Thrust Rversers

Question 11

Hyd A - EDP Leak - What’s left in Reservoir

Answer 11

20%

Question 12

Hyd B - EDP/EMDP Leak - What’s left

Answer 12

Around 5% for PTU - Will indicate 0%

Question 13

Leak in standby - What’s left in Hyd B

Answer 13

Around 72%

Question 14

Hyd A Systems

Answer 14

A ILERONS
R UDDER
E LEVATOR
A UTOPILOT A
L ANDING GEAR
G ROUND SPOILERS
I NFLIGHT SPOILERS
A LTERNATE BRAKES
N OSE WHEEL STEERING
T HRUST REVERSES NO.1
P OWER TRANSFER UNIT

Question 15

Hyd B Systems

Answer 15

Flight Controls
Autopilot B
LGTU
TE/LE Flaps and Slats
Autoslats
Yaw Damper
Flight spoilers
Right Thrust reverser
Normal Brakes

Question 16

Standby Hyd EMDP Power source

Answer 16

AC Transfer Bus 2