B757 Review Questions

1
B757 Review Questions
2
Hydraulics and Landing Gear

• If the normal, alternate, and reserve braking
  systems were not available, and the brake
  pressure gauge indicated 1,000psi, how many brake
  applications are available?
• None, the gauge only shows pre-charge.

3
Hydraulics and Landing Gear

• Pulling the associated engine fire handle has
  what consequences on the hydraulic system?
• Shuts off the engine driven hydraulic pump

4
Hydraulics and Landing Gear

• Is the PTU ever inhibited from operating?
• Yes, when the right engine is not operating.

5
Hydraulics and Landing Gear

• What braking provides max deceleration?
• RTO

6
Hydraulics and Landing Gear

• How do you know the RAT has been deployed?
• Green RAT PRESS light and system pressure light
  is out

7
Hydraulics and Landing Gear

• What does the Brake Source light indicate?
• This indicates that normal and alternate brake
  system pressure is low.

8
Hydraulics and Landing Gear

• Is anti-skid available during alternate brake
  system use?
• Yes. However anti skid is limited to truck
  pairs, not individual wheels.

9
Hydraulics and Landing Gear

• TRUE / FALSE alternate landing gear extension
  uses residual fluid from the left system and a
  small electric pump to unlock the up locks.
• True.

10
Hydraulics and Landing Gear

• Is anti-skid brakes available for Normal,
  Alternate, and reserve brakes?
• Yes.

11
Hydraulics and Landing Gear

• What would cause the PTU to activate?
• Left engine fails, or the left engine pump
  pressure is low.

12
Hydraulics and Landing Gear

• When does the BRAKE SOURCE light come on?
• Failure of normal and alternate brakes

13
Hydraulics and Landing Gear

• How can I check the operation of the PTU?
• Status page indicates normal pressure in the left
  hydraulic system and the absence of power
  transfer unit message.

14
Hydraulics and Landing Gear

• What is the standpipe fluid reserved for in the
  center hydraulic system?
• Operation of Ram Air Turbine

15
Hydraulics and Landing Gear

• What is the standpipe fluid reserved for in the
  right hydraulic system?
• Operation of reserve brakes

16
Hydraulics and Landing Gear

• Name the different kinds of brakes on the B757?
• Normal, alternate, reserve, and accumulator

17
Hydraulics and Landing Gear

• How is the gear and doors held in the up
  position?
• Mechanical locks

18
Hydraulics and Landing Gear

• Do you need electrical power to lower the landing
  gear with the alternate system?
• Yes, the small electrical hydraulic pump needs
  power.

19
Hydraulics and Landing Gear

• After using the alternate gear system, does the
  gear door light remain on?
• Yes it is a disagreement because the gear doors
  remain open.

20
Hydraulics and Landing Gear

• What is the maximum steering angle possible using
  the rudder pedals?
• 7 degrees

21
Hydraulics and Landing Gear

• What is the maximum steering angle possible using
  the tiller?
• 65 degrees

22
Hydraulics and Landing Gear

• When will the BRAKE TEMP light on the forward
  instrument panel illuminate?
• Any brake temp value above 5

23
Hydraulics and Landing Gear

• What is the significance of the standpipe in the
  left hydraulic system?
• To protect sub-systems of the PTU.

24
Hydraulics and Landing Gear

• What are the primary systems of the PTU?
• Flaps/slats, landing gear, steering and HDG if
  needed

25
Hydraulics and Landing Gear

• What are the primary systems of the center
  hydraulic system?
• Flight controls

26
Hydraulics and Landing Gear

• What hydraulic system operates the stabilizer
  trim?
• Center and right

27
Hydraulics and Landing Gear

• What is the minimum airspeed for the RAT to
  provide hydraulic pressure?
• 130 knots

28
Hydraulics and Landing Gear

• What is the significance of the standpipe in the
  right hydraulic system?
• To protect the normal brake system for reserve
  brake operation.

29
Hydraulics and Landing Gear

• What happens when you select reserve brakes, and
  how do you know have reserve brakes?
• The right electric hydraulic pump activates
  regardless of switch position, and the pump is
  isolated from the other right system components
  so that the pump pressure is supplied exclusively
  to the normal brake system. You will not have a
  brake source light

30
Hydraulics and Landing Gear

• How do you select alternate brakes, and how do
  you know you have alternate brakes?
• Alternate brakes are selected automatically with
  loss of the right system pressure.

31
Hydraulics and Landing Gear

• When does the RTO function work during takeoff?
• Above 85 kts.

32
Hydraulics and Landing Gear

• When would the RSVR light illuminate?
• Low reservoir quantity or pressure.

33
Hydraulics and Landing Gear

• When does the auto brake system immediately
  disarm without pilot action?
• When an auto brake or normal anti-skid system
  fault occurs

34
Hydraulics and Landing Gear

• If the fluid level in the right reservoir has
  leaked down to the top of the standpipe fluid
  remains available for operation of the
• Reserve Brakes

35
Hydraulics and Landing Gear

• Which hydraulic reservoir provides the fluid to
  the PTU for operation of the flaps, slats,
  landing gear, nose wheel steering, and PTU when
  the Right hydraulic system is providing the drive
  energy for the PTU.
• Left.

36
Hydraulics and Landing Gear

• Elevator feel Stabilizer Trim are powered from
  which two hydraulic systems?
• Right and Center

37
Hydraulics and Landing Gear

• Which center hydraulic pump is normally inhibited
  when only one electrical source of power is
  available?
• 2

38
Hydraulics and Landing Gear

• The Yaw Dampers are powered from which two
  hydraulic systems
• Left and Center

39
Hydraulics and Landing Gear

• Which hydraulic system provides fluid for the
  alternate brakes?
• Left

40
Hydraulics and Landing Gear

• The reserve brake switch activates the _______,
  which draws fluid from the below standpipe level
  of the right reservoir and uses it to pressurize
  the normal brake system.
• Right hydraulic system electric pump

41
Hydraulics and Landing Gear

• The _______ furnishes the hydraulic power for
  landing gear retraction and extension including
  the nose gear steering.
• Left hydraulic system

42
Hydraulics and Landing Gear

• For landing, the Auto brake system is activated
  when _____and the _______.
• Both thrust levers are at idle, the wheels have
  spun up

43
Hydraulics and Landing Gear

• There are several ways to disarm the auto brake
  system on landing. Among them are
• Advancing thrust levers, moving speed brake lever
  down, applying manual braking

44
Hydraulics and Landing Gear

• TRUE/FALSE If both normal and alternate brake
  systems do not work, the reserve brake system
  automatically takes over the system
• FALSE