Hydraulic System

Question 1

Loss of system A inop items

Answer 1

Autopilot A inop
-Autopilot B is available.

Inboard flight spoilers inop
-Roll rate and speedbrake effectiveness may be reduced in flight.

Normal landing gear extension and retraction inop
-Manual gear extension is needed.

Ground spoilers inop
-Landing distance will be increased.

Alternate brakes inop
-Normal brakes are available.

Engine 1 thrust reverser normal hydraulic pressure inop
-Thrust reverser will deploy and retract at a slower rate and some thrust asymmetry can be anticipated during thrust reverser deployment.

Normal nose wheel steering inop
-PQ771 - PR078, Alternate nose wheel steering is available.

Question 2

Loss of system B inop items

Answer 2

Autopilot B inop
-Autopilot A is available.

Outboard flight spoilers inop
Roll rate and speedbrake effectiveness may be reduced in flight.

Yaw damper inop

Trailing edge flaps normal hydraulic system inop
-The trailing edge flaps can be operated with the alternate electrical system. Alternate flap extension time to flaps 15 is approximately 2 minutes.

Leading edge flaps and slats normal hydraulic system inop
-The leading edge flaps and slats can be extended with standby pressure. Once extended, they can not be retracted.

Autobrake inop
-Use manual braking.

Normal brakes inop
-Alternate brakes are available.

Engine 2 thrust reverser normal hydraulic pressure inop
-Thrust reverser will deploy and retract at a slower rate and some thrust asymmetry can be anticipated during thrust reverser deployment.

Alternate nose wheel steering inop
-Normal nose wheel steering is available.

Question 3

Normal System Pressure

Answer 3

3000PSI

Question 4

Maximum System Pressure

Answer 4

3500PSI

Question 5

Refill Percentage

Answer 5

Classic 88%
NG 76%

Question 6

System A Engine Driven Pump Standpipe Percentage

Answer 6

Classic 22%
NG 20%

Question 7

System B Engine Driven Pump Standpipe Percentage

Answer 7

Classic 11%
NG 0%

Question 8

System B Electric Driven Pump Standpipe Percentage

Answer 8

Classic 40%
NG 0%

Question 9

System B Standby System Balance Line Percentage

Answer 9

Classic 64%
NG 72%

Question 10

Minimum Fuel Required in Main Tank 1 for Hydraulic Operation

Answer 10

760KG

Question 11

What is the purpose of the Landing Gear Transfer Unit

Answer 11

Supply hydraulic fluid to raise the landing gear at the normal rate in the event a loss of ENG 1 RPM causes a loss of System A pressure

Question 12

What does the Standby System power

Answer 12

Rudder
Reverse Thrust
Leading Edge Flaps and Slats (extend only)

Question 13

What conditions permit automatic operation of the Standby System

Answer 13

Loss of System A or B or rudder pressure reducer fails in low pressure mode
Flaps extended
Airborne or wheel speed >60Kts
FLT CTRL switch A or B hydraulic system on
Main PCU Force Fight Monitor trips