757 Fire Det/Prot

Question 1

What happens when a single fault is detected during a fire detection test?

Answer 1

The system configures the affected engine for a single loop operation

Question 2

How is a loop fault indicated?

Answer 2

By an EICAS message

Question 3

How many fire detectors in each cargo department?

Answer 3

There are two smoke detectors in each

Question 4

What happens when the the Engine Fire handle is pulled?

Answer 4

1. The engine spar valve closes
2. Thrust reverser is deactivated
3. The engine driven hydraulic pump is depressurized and the supply valve is closed
4. The generator field is opened, which opens the breaker
5. Ignition is de-energized
6. The engine bleed valve is closed

Question 5

A fire is indicated in the left engine. You pull the left fire handle, but it won’t move. What should you do?

Answer 5

Push the fire override switch and pull the handle

Question 6

What happens when you rotate the fire handle?

Answer 6

The selected fire extinguisher bottle is discharged

Question 7

What happens when the APU fire handle is pulled?

Answer 7

The APU immediately will shut down

Question 8

During takeoff, immediately after rotation, there is an engine fire. However, there is no fire bell. What is the problem?

Answer 8

There is no problem. During takeoff the fire bell and warning light is inhibited from nose gear extension to 400’ or 20 seconds

Question 9

What does pushing the forward cargo compartment extinguisher arming switch do?

Answer 9

1. Arms the fir extinguisher squibs for the selected compartment
2. Silences the fire bell
3. Shuts off the right recirc fan and the right pack goes to high flow
4. The forward cargo heat fan shuts off

Question 10

Common fire indications:

Answer 10

Fire bell
Master Warning Light
Discrete Fire Light
EICAS warning message

Question 11

Engine fire indication:

Answer 11

Fuel control switch light

Fire switch light

Question 12

Main cargo fire indication

Answer 12

Overhead panel fire lights

Question 13

Wheel Well Fire indication

Answer 13

Wheel Well Fire Light

Question 14

APU fire indications

Answer 14

APU panel fault light.
APU fire switch
Nose gear fire light with intermittent horn

Question 15

How can the fire bell be silenced?

Answer 15

Pressing the aster Warning Light

Arming the fire switch

Question 16

Overheat is a __________ not a ___________

Answer 16

Caution

Warning

Question 17

Pulling the fire switch does what?

Answer 17

Arms the bottle
Silences the bell
Shuts off everything

Question 18

Cargo Isolation switch attempts to:

Answer 18

Starve the fire

Question 19

Cargo fire:

Answer 19

Arms the Forward and Aft bottles
Silences the bell
Forward also turns off left recirc fan

Question 20

Where can the APU fire bottle be discharged from?

Answer 20

Cockpit

Nose gear

Question 21

Engine/APU/ Overheat fire loops:

Answer 21

Automatically tested at power application
Continuously monitored
Normally requires agreement in order to send signal
Automatically configures for single loop operation if partner fails

Question 22

Complete system failure of a given Fire Loop Detector pair:

Answer 22

EICAS message and SYS FAIL P-RESET light illuminates

Pressing light resets system to enable alert in the event of additional failures.

Question 23

Cargo Smoke Detectors:

Answer 23

Auto tests at power power application and power transfer

Requires agreement in order to send signal

Not continuously monitored

Does not auto reconfigure if partner fails

Requires fire overheat test in order to reconfigure for single detector operation

Question 24

Which bottle is used first on a cargo fire?

Answer 24

Use bottle 1 first

Use bottle 2 on approach or 50 minute after discharging bottle 1

Question 25

What happens when the fire handle is pulled?

Answer 25

Arms the bottles Silences the warning Closes fuel valves Closes associated engine bleed air valve Shuts off hydraulic fluid to the associated engine driven pump

Question 26

Which an engine fire, how can the fire bell be silenced?

Answer 26

Extinguishing the fire Pulling the engine fire handle Pushing either master caution/warning switch

Question 27

What is the meaning of a L or R ENG OVHT light and EICAS caution message?

Answer 27

Overheat is detected in the engine

Question 28

How many fire bottles are available for an engine fire?

Answer 28

Two

Question 29

Describe what happens when a cargo compartment ARM switch is pushed?

Answer 29

Forward compartment: Silences the bell Arms the bottles Turns off left recirc fan Aft compartment: Silences the bell Arms the bottle

Question 30

What would you expect to see after pushing the AFT Cargo Compartment ARM switch?

Answer 30

The AFT Cargo switch light would illuminate “ARMED”

Question 31

How many fire bottles are available for cargo fires?

Answer 31

Two

Question 32

What happens when the APU fire handle is pulled?

Answer 32

Arms the bottle and silences the bell Closes the APU Fuel Valve Shuts down the APU Trips the APU generator breaker Closes the APU bleed valve

Question 33

What type of fire protection is provided for the main gear wheel well?

Answer 33

The main gear wheel well has fire detection and warning only. There is no fire extinguishing system

Question 34

How long will the main gear wheel well fire warning lights remain illuminated?

Answer 34

As long as the fire signal exists

Question 35

When is system monitoring of the Cargo Smoke Detectors accomplished?

Answer 35

When the Cargo Smoke Detection System is tested

Question 36

What are the cockpit indications of a failure of an Engine Fire Detection system?

Answer 36

The SYS FAIL light illuminates along with an EICAS advisory message

Question 37

Why is it important to push the System Fail Reset switch after a fail P-RESET light illuminates?

Answer 37

Resetting allows monitoring of the remaining systems and extinguishes the FAIL light