ATA 29 (B777 AMM Part 1)

Question 1

If you pressurize the hydraulic systems with the hydraulic pumps make sure, (B1, B2)

a. there is sufficient fuel in the main fuel tanks to cool the heat exchangers.

b. not to let fluid move between the center and right systems, which can cause a high fluid level in one system and a low fluid level in the other system.

c. the hydraulic reservoir is not overfull or under

Answer 1

A

Question 2

Four hydraulic interface module (HYDIM) cards supply control, indication, and other functions to the hydraulic system. Two of them control the functions for: (B1, B2)
a. the left system.
b. the right system
c. the center system

Answer 2

C

Question 3

When you operate one of the engine fire switches: (B1, B2)

a. the related hydraulic pumps are switched off

b. the hydraulic fluid supply to the related pump shuts off and the pump depressurizes

c. the pressure line from the related pump is connected to the return line to relieve the pump

Answer 3

B

Question 4

When the EDP control switch is OFF: (B2)

a. the EDP depressurization solenoid valve is energized

b. the EDP depressurization solenoid valve is de-energized

c. the EDP depressurization solenoid valve is de-activated

Answer 4

A

Question 5

The HYDIM cards control the ADPs in: (B2)

a. the continuous run (ON) mode

b. the demand (AUTO) mode

c. all operation modes

Answer 5

B

Question 6

Both ADPs operate for the condition: (B2)

a. Landing gear extension

b. Takeoff roll (ground mode, airspeed is more than 80 kts, and the flaps are in the takeoffposition)

c. Low pressure (less than 2400 psi) in the center system or in both center system ACMPs

Answer 6

B

Question 7

Alternating Current Motor Pumps (ACMPs) are normally the primary pumps, and NOT controlled by the HYDIM cards in: (B1, B2)

a. left hydraulic system
b. center hydraulic system
c. right hydraulic system

Answer 7

B

Question 8

The RAT is extended in 2 seconds by: (B1, B2)

a. hydraulic pressure from the center hydraulic system

b. two solenoids on the actuator

c. the actuator internal spring

Answer 8

C

Question 9

The operation of the RAT generator heater system can be done: (B1, B2)
a. in no way
b. through the MAT
c. from the RAT control panel

Answer 9

B

Question 10

Hydraulic reservoir quantity transmitters are interchangeable for: (B1, B2)
a. left and center systems
b. right and center systems
c. left and right systems

Answer 10

C

Question 11

The reservoir pressure switches send a reservoir low pressure signal: (B1, B2)

a. when the reservoir pressure is 16 psia or less.

b. when the reservoir pressure is 21 psia or less.

c. when the reservoir pressure is 25 psia or less.

Answer 11

B

Question 12

Temperature transducers for hydraulic pumps are: (B2)

a. resistance temperature detector type transducers.

b. thermocouple type transducers

c. electromotive induction type transducers

Answer 12

A

Question 13

The reservoir quantity transmitters are: (B2)

a. capacitance-type transmitters.

b. vibrating cylinder transducer type

c. ultrasonic devices type

Answer 13

A

Question 14

When both ADP switches are selected to ON, which pump will operate? (B1)

a. C1 and C2 will operate continuously

b. C2 will operate continuously

c. C1 will operate continuously

Question 15

Center Hydraulic Isolation System let hydraulic from the bottom of center hydraulic reservoir go to (B1)

a. Main landing gear

b. Alternate/Reserve brake and Nose wheel steering systems

c. Flaps/Slats systems

Question 16

Pulling RH Engine Fire handle will (B1)

a. Turn off RH EDP and ACMP

b. Activate Center Hydraulic Isolation System

c. Supply electrical power to depress. solenoid of RH EDP

Question 17

Airplane is powered and EDP switch is selected to OFF, which of the following is true? (B1)

a. EDP shutoff valve close

b. Depress. solenoid of EDP is not powered

c. Depress. solenoid of EDP is powered

Question 18

ADP primary speed control circuit operates (B1)

a. A pneumatic actuator for the VIGVs

b. A pneumatic actuator for the MSOV

c. A speed sensor for MSOV

Question 19

RAT motoring valve lever is used to (B1)

a. Turn RAT turbine on the ground by center hydraulic power

b. Turn RAT turbine on the ground by electrical power

c. Stow RAT after extension for maintenance

Question 20

PRESS light on the RAT switch illumination indicates (B1)

a. RAT does not have enough pressure

b. RAT does not operate

c. RAT is supplying hydraulic pressure

Question 21

Which of the following combination of upper and lower sight glasses shows a satisfactory hydraulic quantity in the reservoir? (B1)
a. Red-Black
b. Black-Black
c. Red-Red

Question 22

We must not operate hydraulic pumps when pump temperature indication on Hyd Maintenance page (B1)
a. ≤ 100C
b. ≥ 100C
c. ≥ 90C

Question 23

ADU heaters are used to (B1)

a. Prevent icing for hydraulic entering ADP

b. Prevent icing for speed control components of ADP

c. Prevent icing for LSCU

Question 24

Minimum fuel quantity in the right main tank required for cooling center hydraulic system case drain is (B1)
a. 2175 kg
b. 3313 kg
c. 500 kg

Question 25

Purpose of hydraulic accumulators? (B1) a. To absorb pressure changes caused by tail flight control PCUs b. Reserve hydraulic for Alternate gear extension c. Reserve hydraulic for Alternate brake and Nose gear steering systems

Question 26

What controls ACMP primary pumps? (B1) a. ELMS b. HYDIM cards c. AIMS

Question 27

Which of following statements of interchangeablity is correct? (B1) a. EDPs and ADPs b. EDPs and ACMPs c. ADP and ACMPs