HYDRAULICS Flashcards
HYDRAULICS
How many electrically driven hydraulic
systems are there?
How many electrically driven hydraulic
systems are there?
One
HYDRAULICS
Are the hydraulic systems independent of each other?
Are the hydraulic systems independent of each other?
Yes
HYDRAULICS
Which systems are powered by both hydraulic systems?
Which systems are powered by both hydraulic systems?
Ailerons and elevators
HYDRAULICS
How can you set the brakes without the
engines running?
How can you set the brakes without the
engines running?
Turning the aux hydraulic pump that is electrically
actuated on, then setting the parking brake.
HYDRAULICS
Which items are powered by the left hydraulic sytem?
Which items are powered by the left hydraulic sytem?
Left thrust reverser, emergency brakes, outboard
airbrakes
HYDRAULICS
What is the normal hydraulic pressure?
What is the normal hydraulic pressure?
2700-3250 psi
What hydraulic system does the auxilary
electric pump power?
What hydraulic system does the auxilary
electric pump power?
Right
HYDRAULICS
What power system does the emergency
landing gear use?
What power system does the emergency
landing gear use?
Stored pneumatic pressure (nitrogen)
HYDRAULICS
Emergency wheel brakes power is provided by?
Emergency wheel brakes power is provided by?
An accumulator
Left Hydraulic System
HYDRAULICS
When does the electric auxiliary pump
come on automatically?
When does the electric auxiliary pump
come on automatically?
Either main landing gear not locked up with one
thrust lever set beyond MAX CLIMB; or
Low pressure in the right hydraulic system
(below 1200 psi)
HYDRAULICS
True or False; With a total loss of hydraulic power, the
airplane is unflyable.
rue or False; With a total loss of hydraulic power, the
airplane is unflyable.
False
HYDRAULICS
When does the q-feel system come on?
When does the q-feel system come on?
150 KIAS
HYDRAULICS
How many accumulators are there?
How many accumulators are there?
Two
HYDRAULICS
What does the left hydraulic accumulator power?
What does the left hydraulic accumulator power?
One T/R deployment, or
Six applications of emergency brakes for a total of
50 seconds.
HYDRAULICS
True or False; The OVRRD position of the electrical
auxiliary hydraulic pump will allow the pump to run even
if the thermal protection has turned the pump off due to
high motor load.
True or False; The OVRRD position of the electrical
auxiliary hydraulic pump will allow the pump to run even
if the thermal protection has turned the pump off due to
high motor load.
True
What is the normal pressure for the emergency landing
gear nitrogen bottle?
What is the normal pressure for the emergency landing
gear nitrogen bottle?
3000 psi
HYDRAULICS
What is the pre-charge pressure of the
brake accumulator?
What is the pre-charge pressure of the
brake accumulator?
1250 psi.
HYDRAULICS
When does the HYD PUMP PRESS HI message come
on?
When does the HYD PUMP PRESS HI message come
on?
Hyraulic pressure above 3,500 psi
HYDRAULICS
When does the HYD QTY REFILL message come on?
When does the HYD QTY REFILL message come on?
Hydraulic fluid quantity is less than 90% and on the
ground only.
HYDRAULICS
How can landing gear be lowered with the loss of both
the right and left hydraulic system?
How can landing gear be lowered with the loss of both
the right and left hydraulic system?
Emergency landing gear handle near the pilot’s right
knee on the side of the console
With compressed nitrogen
HYDRAULICS
What is the steering angle of the nose wheel steering?
What is the steering angle of the nose wheel steering?
+- 60 degrees
HYDRAULICS
How can you override the gear handle if it will not come
up?
How can you override the gear handle if it will not come
up?
Use the DOWNLOCK OVERRIDE button
HYDRAULICS
What does the GEAR NOT DOWN message mean?
What does the GEAR NOT DOWN message mean?
Landing gear is not down and locked with radar alti-
tude of less than 800 ft
One thrust lever at or below max cruise detend or
flaps more than 25 degrees, both required.
HYDRAULICS
True or False; The emergency braking system is just as
effective as the normal breaking system.
True or False; The emergency braking system is just as
effective as the normal braking system.
False; it is only half as effective
