HYD Panel

Question 1

ENG 1 2 PUMP - On (Dark)

Answer 1

Pump runs if engine is running

Question 2

ENG 1 2 PUMP - Fault Light (Amber)

Answer 2

Reservoir problem:
-Low level
-Fluid Overheat
-Low air pressure
Pump problem
-Low pump pressure (inhibited on the grd with engine off)

Question 3

ENG 1 2 PUMP - OFF light (White)

Answer 3

Stops pump

Turns off Fault light except overheat

Question 4

RAT MAN ON pb - Pushed

Answer 4

Extends RAT and power Blue system (2500psi)

switch powered by hot Batt buss

Question 5

Blue ELEC PUMP - ON (Dark)

Answer 5

Pump operates when electric power available and:

• In flight
• On the ground, after first engine start

Question 6

Blue ELEC PUMP - Fault light (Amber)

Answer 6

Reservoir problem:
-Low level
-Fluid Overheat
-Low air pressure
Pump problem
-Low pump pressure (inhibited on the grd with engine off)
-Overheat

Question 7

Blue ELEC PUMP - OFF (White)

Answer 7

Pump is unpowered

Question 8

Yellow ELEC PUMP - On (White)

Answer 8

Pump operates when electric power available

Question 9

Yellow ELEC PUMP - Fault light (Amber

Answer 9

Reservoir problem:
-Low level
-Fluid Overheat
-Low air pressure
Pump problem
-Low pump pressure (inhibited on the grd with engine off)
-Overheat

Question 10

Yellow ELEC PUMP - OFF (Dark)

Answer 10

Pump is off

• Pump will be turned on regardless of switch, if cargo door lever moved to open/closed
• Turns off fault light except for overheat

Question 11

PTU - AUTO

Answer 11

Automatically runs when Green & yellow differential psi>500
Self test during second engine start
NOTE: PTU is inhibited
-for 40 seconds after cargo door is opened or closed
-only one ENG master switch is on and tow pin in
-only one ENG master switch is on and parking brake set

Question 12

PTU - Fault light (Amber)

Answer 12

Reservoir Problem

• low level
• fluid overheat
• low air pressure

Question 13

PTU - OFF light (White)

Answer 13

Power transfer stops

-turns off Fault light except for overheat