Systems Questions

Question 1

What controls are not Fly-By-Wire

Answer 1

Ailerons

Question 2

All FBW controls employ what?

Answer 2

ACE - Actuator Control Electronics

Question 3

What does the electrical PBIT do?

Answer 3

It is automatically performed during power up and provides detection of out-of-tolerance conditions and failures in the FCM’s, P-ACE and SF-ACEs

Question 4

What is required for the Electrical PBIT

Answer 4

Automatic after aircraft is powered by any AC source

Question 5

How long does the Electrical PBIT take?

Answer 5

Approximately 3 minutes

Question 6

If the FLT CTRL BIT EXPIRED msg is displayed… ??

Answer 6

The Hydraulic PBIT must be performed

Question 7

What 3 conditions interrupt the electrical PBIT

Answer 7

Any Hydraulic pump is running
The Flight Control Mode Panel switches are cycled
The AC power supply is interrupted

Question 8

What does the Hydraulic PBIT do?

Answer 8

Provides functional test of the flight actuators

Question 9

The Hydraulic PBIT is performed… when???

Answer 9

Automatically when all 3 hydraulic systems are engergized

Question 10

The Hydraulic PBIT can be initiated manually how?

Answer 10

Manually by turning on all 3 hydraulic pumps.

Question 11

How long does the Hydraulic PBIT take?

Answer 11

Approximately one minute

Question 12

The Hydraulic PBIT will not begin if hydraulic reservoir temperature is… ?

Answer 12

Below 10 deg C

Question 13

On the ground, Hydraulic Pump System 1 and 2 ACMPs come on in the Auto Position when… ?

Answer 13

Flaps greater than zero,
- Thrust set for Takeoff
or
- Ground speed greater than 50 Kts

Question 14

On the ground hydraulic ACMP 2 will automatically be activated when… ?

Answer 14

Engine #1 is running AND parking brake released

Question 15

When does hydraulic ACMP 2 turn off on the ground?

Answer 15

Automatically after 6 minutes have elapsed from parking brake application

Question 16

What is the PTU

Answer 16

Power Transfer Unit

Question 17

When is the PTU activated?

Answer 17

During Takeoff and Landing if the engine 2 or EDP 2 fails

Question 18

The PTU will automatically be activated when ALL of the following conditions are met:

Answer 18

Flaps greater than Zero
EDP 1 not failed
Hydraulic reservoir 2 quantity above 12%

Question 19

Hydraulic System 3 is comprised of … ?

Answer 19

One Reservoir
Two Hydraulic ACMPs
One Accumulator

Question 20

The Hydraulic System 3 supplies what systems?

Answer 20

Elevator ( right hand outboard )
Rudder ( lower actuator )
Ailerons ( left and right outboard actuators )

Question 21

When is the Hydraulic 3B actuated?

Answer 21

In flight if hydraulic electric pump 3A fails

Question 22

Meaning of HYD 1 HIGH TEMP Caution Msg

Answer 22

Hydraulic reservoir temperature has reached 100 deg C

Question 23

Meaning of HYD 1 OVERHEAT Warning Msg

Answer 23

Hydraulic Pressure has reached 145 deg C

Question 24

When Hydraulic fluid temp increases to 100 deg C

Answer 24

HYD 1 HIGH TEMP Caution EICAS Message

Question 25

When Hydraulic fluid temp reaches 125 deg C

Answer 25

Hydraulic SOV closes

Question 26

When Hydraulic fluid temp reaches 145 deg C

Answer 26

HYD 1 OVERHEAT Warning EICAS Message

Question 27

The electrical PBIT takes how long?

Answer 27

3 minutes after AC power is established

Question 28

The electrical PBIT will be interrupted if… ?

Answer 28

Any hydraulic pump is running
The Flight Control Mode Panel switches are cycled
The AC power supply is interrupted

Question 29

Hydraulic PBIT takes how long?

Answer 29

One minute after all three hydraulic systems are pressurized

Question 30

The hydraulic PBIT will be interrupted if… ?

Answer 30

Any flight control surface is moved while test is running