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B777 > Fire Protection And Detection > Flashcards

Fire Protection And Detection Flashcards

1
Q

The aircraft is equipped with fire detection and extinguishing systems for the APU, Cargo compartments, Lavatories, and Engines.
The Engines are also equipped with overheat detection systems.

A

The aircraft is equipped with fire detection and extinguishing systems for the APU, Cargo compartments, Lavatories, and Engines.
The Engines are also equipped with overheat detection systems.

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2
Q

The flight deck crew rest compartment has a fire detection system, but no fire extinguishing system.
The main gear wheel wells have a fire detection system, but no fire extinguishing system.

A

The flight deck crew rest compartment has a fire detection system, but no fire extinguishing system.
The main gear wheel wells have a fire detection system, but no fire extinguishing system.

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3
Q

Fire and overheat detection systems are powered by the Battery bus, except for cargo smoke detection which is powered by the Left and Right Main AC buses.

A

Fire and overheat detection systems are powered by the Battery bus, except for cargo smoke detection which is powered by the Left and Right Main AC buses.

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4
Q

Fire Extinguishing is provided for the APU, Engines, Cargo Compartments, and Lavatories.
There one agent bottle for the APU, and two bottles for the engines.
There are five agent bottles for the cargo compartment fire extinguishing.
These Fire extinguishing systems are powered by the Hot Battery bus.

A

Fire Extinguishing is provided for the APU, Engines, Cargo Compartments, and Lavatories.
There one agent bottle for the APU, and two bottles for the engines.
There are five agent bottles for the cargo compartment fire extinguishing.
These Fire extinguishing systems are powered by the Hot Battery bus.

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5
Q

The Engine Fire Switches are mechanically locked when the fuel control switch is in the Run position, however the switches are unlocked automatically for a fire warning on the associated engine or when the associated Fuel Control switch is in CUTOFF.

A

The Engine Fire Switches are mechanically locked when the fuel control switch is in the Run position, however the switches are unlocked automatically for a fire warning on the associated engine or when the associated Fuel Control switch is in CUTOFF.

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6
Q

ENG FIRE SWITCH PULLED OUT:

  • Arms both engine fire extinguishers
  • Closes the associated engine and spar fuel valves
  • Closes the associated engine bleed air valves
  • Trips the associated engine generator field and generator breaker
  • Shuts off hydraulic fluid to the associated engine-driven hydraulic pump
  • Depressurizes the associated engine-driven hydraulic pump
  • Removes power from the thrust reverser isolation valve.
A

ENG FIRE SWITCH PULLED OUT:

  • Arms both engine fire extinguishers
  • Closes the associated engine and spar fuel valves
  • Closes the associated engine bleed air valves
  • Trips the associated engine generator field and generator breaker
  • Shuts off hydraulic fluid to the associated engine-driven hydraulic pump
  • Depressurizes the associated engine-driven hydraulic pump
  • Removes power from the thrust reverser isolation valve.
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7
Q

APU FIRE SWITCH PULLED OUT:

  • Arms the APU fire extinguisher bottle
  • Closes the APU fuel valve
  • Closes the APU bleed air valves
  • Closes the APU air inlet door
  • Trips the APU generator field and generator breaker
  • Shuts down the APU (if automatic shutdown does not occur).
A

APU FIRE SWITCH PULLED OUT:

  • Arms the APU fire extinguisher bottle
  • Closes the APU fuel valve
  • Closes the APU bleed air valves
  • Closes the APU air inlet door
  • Trips the APU generator field and generator breaker
  • Shuts down the APU (if automatic shutdown does not occur).
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8
Q

CARGO FIRE ARM SWITCH PUSHED IN:

  • Arms all cargo fire extinguisher bottles
  • Arms the selected compartment extinguisher valve
  • Turns off both lower recirculation fans
  • Shuts down aft and bulk cargo heat
  • Commands the packs to provide the minimum air flow required to provide pressurization
  • Shuts down the bulk cargo compartment ventilation system operation (aft cargo fire only)
  • Shuts down the lavatory/galley vent fan (aft cargo fire only)
  • Puts the equipment cooling system into the override mode (forward cargo fire only).
A

CARGO FIRE ARM SWITCH PUSHED IN:

  • Arms all cargo fire extinguisher bottles
  • Arms the selected compartment extinguisher valve
  • Turns off both lower recirculation fans
  • Shuts down aft and bulk cargo heat
  • Commands the packs to provide the minimum air flow required to provide pressurization
  • Shuts down the bulk cargo compartment ventilation system operation (aft cargo fire only)
  • Shuts down the lavatory/galley vent fan (aft cargo fire only)
  • Puts the equipment cooling system into the override mode (forward cargo fire only).
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9
Q

The amber CARGO FIRE Discharge (DISCH) Light illuminates when the first two extinguisher bottles have begun to discharge.
The EICAS advisory message BOTTLE DISCHARGE CARGO displays when both rapid discharge fire extinguisher pressures are low.

A

The amber CARGO FIRE Discharge (DISCH) Light illuminates when the first two extinguisher bottles have begun to discharge.
The EICAS advisory message BOTTLE DISCHARGE CARGO displays when both rapid discharge fire extinguisher pressures are low.

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10
Q

The APU Ground Control panel is equipped with a red APU FIRE light that illuminates if an APU fire is detected or a FIRE/OVERHEAT test is in progress.
Pressing the red APU FIRE SHUTDOWN switch shuts down the APU and arms the APU fire extinguisher.
Recall, the APU should automatically shutdown when a fire is detected.

A

The APU Ground Control panel is equipped with a red APU FIRE light that illuminates if an APU fire is detected or a FIRE/OVERHEAT test is in progress.
Pressing the red APU FIRE SHUTDOWN switch shuts down the APU and arms the APU fire extinguisher.
Recall, the APU should automatically shutdown when a fire is detected.

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11
Q

The indications of an APU Fire Warning are:

  • The fire bell sounds
  • The master WARNING lights illuminate
  • The EICAS warning message FIRE APU is displayed
  • The APU fire switch fire warning light illuminates
  • The APU fire switch unlocks.
A

The indications of an APU Fire Warning are:

  • The fire bell sounds
  • The master WARNING lights illuminate
  • The EICAS warning message FIRE APU is displayed
  • The APU fire switch fire warning light illuminates
  • The APU fire switch unlocks.
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12
Q

No alert is provided to the flight crew when there is a single loop failure!

A

No alert is provided to the flight crew when there is a single loop failure!

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13
Q

he EICAS advisory message DET FIRE APU is displayed if the APU fire detection system fails.

A

he EICAS advisory message DET FIRE APU is displayed if the APU fire detection system fails.

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14
Q

When the airplane is on the ground with both engines shut down, the APU is operating in the “Unattended mode”.
In this situation, a fire signal from either APU fire detector loop causes automatic APU shutdown and the APU extinguisher bottle automatically discharges.
This completes our description of APU Fire Detection Extinguishing. Now for some questions…

A

When the airplane is on the ground with both engines shut down, the APU is operating in the “Unattended mode”.
In this situation, a fire signal from either APU fire detector loop causes automatic APU shutdown and the APU extinguisher bottle automatically discharges.
This completes our description of APU Fire Detection Extinguishing. Now for some questions…

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15
Q

Fire and overheat detection systems are powered by the Battery bus, except for cargo smoke detection which is powered by the Left and Right Main AC buses.

A

Fire and overheat detection systems are powered by the Battery bus, except for cargo smoke detection which is powered by the Left and Right Main AC buses.

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16
Q

There are five agent bottles for the cargo compartment fire extinguishing.
These Fire extinguishing systems are powered by the Hot Battery bus.

A

There are five agent bottles for the cargo compartment fire extinguishing.
These Fire extinguishing systems are powered by the Hot Battery bus.

17
Q

CARGO FIRE ARM SWITCH PUSHED IN:

  • Arms all cargo fire extinguisher bottles
  • Arms the selected compartment extinguisher valve
  • Turns off both lower recirculation fans
  • Shuts down aft and bulk cargo heat
  • Commands the packs to provide the minimum air flow required to provide pressurization
  • Shuts down the bulk cargo compartment ventilation system operation (aft cargo fire only)
  • Shuts down the lavatory/galley vent fan (aft cargo fire only)
  • Puts the equipment cooling system into the override mode (forward cargo fire only).
A

CARGO FIRE ARM SWITCH PUSHED IN:

  • Arms all cargo fire extinguisher bottles
  • Arms the selected compartment extinguisher valve
  • Turns off both lower recirculation fans
  • Shuts down aft and bulk cargo heat
  • Commands the packs to provide the minimum air flow required to provide pressurization
  • Shuts down the bulk cargo compartment ventilation system operation (aft cargo fire only)
  • Shuts down the lavatory/galley vent fan (aft cargo fire only)
  • Puts the equipment cooling system into the override mode (forward cargo fire only).
18
Q

The amber CARGO FIRE Discharge (DISCH) Light illuminates when the first two extinguisher bottles have begun to discharge.
The EICAS advisory message BOTTLE DISCHARGE CARGO displays when both rapid dump bottle pressures are low.

A

The amber CARGO FIRE Discharge (DISCH) Light illuminates when the first two extinguisher bottles have begun to discharge.
The EICAS advisory message BOTTLE DISCHARGE CARGO displays when both rapid dump bottle pressures are low.

19
Q

There is an in flight mode and a ground mode for discharge of cargo compartment extinguishing.
The in flight mode can use all five bottles, but the ground mode only uses three.

A

There is an in flight mode and a ground mode for discharge of cargo compartment extinguishing.
The in flight mode can use all five bottles, but the ground mode only uses three.

20
Q

n flight, pushing the CARGO FIRE DISCHARGE switch causes the immediate total discharge of two rapid dump-extinguishing bottles (1A and 1B) into the selected compartment.
The bottles are identical and weigh approximately 65 lbs. each.
The squib explosion opens the diaphragms in the dump bottles and in the selected compartment valve. Nitrogen pressure pushes the halon from the bottles, through the open compartment valve, and into the

A

n flight, pushing the CARGO FIRE DISCHARGE switch causes the immediate total discharge of two rapid dump-extinguishing bottles (1A and 1B) into the selected compartment.
The bottles are identical and weigh approximately 65 lbs. each.
The squib explosion opens the diaphragms in the dump bottles and in the selected compartment valve. Nitrogen pressure pushes the halon from the bottles, through the open compartment valve, and into the

21
Q

The pressure in the discharge line operates the in-line pressure switch.
The switch gives the flight deck indication of bottle discharge.
Once the squibs are fired the Electrical Load Management System (ELMS) starts a twenty-minute timer.

A

The pressure in the discharge line operates the in-line pressure switch.
The switch gives the flight deck indication of bottle discharge.
Once the squibs are fired the Electrical Load Management System (ELMS) starts a twenty-minute timer.

22
Q

After twenty minutes, the ELMS fires the squibs for the remaining three metered bottles (2A, 2B and 2C). The metered bottles are identical and weigh approximately 80 lbs. each.
Halon from the bottles goes through the filter/regulator and into the selected cargo compartment.
The filter/regulator causes a slow and continuous flow of halon into the cargo compartment to keep the fire out.

A

After twenty minutes, the ELMS fires the squibs for the remaining three metered bottles (2A, 2B and 2C). The metered bottles are identical and weigh approximately 80 lbs. each.
Halon from the bottles goes through the filter/regulator and into the selected cargo compartment.
The filter/regulator causes a slow and continuous flow of halon into the cargo compartment to keep the fire out.

23
Q

If the airplane lands before the twenty-minute timer delay ends, only one metered bottle (2A) discharges at landing.
The remaining two metered bottles (2B and 2C) do not discharge.

A

If the airplane lands before the twenty-minute timer delay ends, only one metered bottle (2A) discharges at landing.
The remaining two metered bottles (2B and 2C) do not discharge.

24
Q

On the ground, if a CARGO FIRE DISCHARGE switch is pushed, two rapid dump-extinguishing bottles discharge into the selected compartment.
The ELMS starts a twenty-minute timer.
After twenty minutes the squib for metered bottle 2A fires.
Metered bottles 2B and 2C do not discharge when the airplane is on the ground.

A

On the ground, if a CARGO FIRE DISCHARGE switch is pushed, two rapid dump-extinguishing bottles discharge into the selected compartment.
The ELMS starts a twenty-minute timer.
After twenty minutes the squib for metered bottle 2A fires.
Metered bottles 2B and 2C do not discharge when the airplane is on the ground.

B777 (10 decks)

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