B-777 Fire Protection

Front 1

What does pulling the engine fire handle do? (7)

Back 1

Closes fuel SOV

Closes hydraulic SOV

Closes bleed air SOV

Trips associated generator

Arms both fire extinguishers

Depressurizes the associated engine driven hydraulic pump

Removes power to reverser isolation valve

Front 2

What does pulling the APU fire switch do? (6)

Back 2

Closes APU fuel SOV

Closes APU bleed air SOV

Closes APU air inlet door

Trips APU generator

Shuts down APU

Arms APU fire extinguisher bottle

Front 3

What does ARMING the cargo fire ARM switches do? (8)

Back 3

Arms all cargo bottles (lwr/aft switches only)

Arms selected compartment extinguisher valve (lwr/aft switches only)

Turns off both recirculation fans

Turns off lavatory/galley fans

Shuts down cargo heat

Commands packs to provide air to cockpit and SUPRNMRY area only

Puts equipment cooling system into override mode (lwr/aft switches only)

Turns off NGS

Front 4

What does pushing the DEPR/DISCH switch do after the main deck was armed?

Back 4

Iniates a cabin altitude of 23,000' when aircraft is at 25,000' to starve fire

Front 5

What does pushing the DEPR/DISCH switch do after a cargo zone was armed?

Back 5

Discharges the fire extinguisher bottles into the selected compartment. 2 initially and then 3 over time

Front 6

What sections of the airplane have fire detection AND extinguishing? (4)

Back 6

APU

Cargo compartments

Engines

Lavatories

Front 7

How many fire extinguisher bottles for the engines?

Back 7

2

Front 8

How is a fire or overheat detected in the engine?

Back 8

The system has two loops which are required to detect a fire or overheat condition. If there is a fault in one of the loops, the remaining loop can detect the condition and provide appropriate fire warning or overheat caution.

Front 9

If both loops in the engine have a fault, is there an indication to the crew and is fire detection provided?

Back 9

An EICAS message will tell the crew of the fault. No fire or overheat detection is provided

Front 10

What happens when an APU fire is detected in attended mode?

Back 10

APU will automatically shutdown

Front 11

How is a fire detected in the APU?

Back 11

The system has two loops which are required to detect a fire condition. If there is a fault in one of the loops, the remaining loop can detect the condition and provide appropriate fire warning.

Front 12

How many APU fire bottles are there?

Back 12

1

Front 13

If a fire is detected on the ground in unattended mode what will the APU do?

Back 13

If a fire is detected on the ground with both engines off (unattended mode) by either loop the APU will shutdown AND extinguishing bottle will discharge

Front 14

What has fire detection ONLY?

Back 14

Main landing gear wheel well. It has a dual loop system

Front 15

What sections of the cargo area have smoke detection?

Back 15

All

Front 16

How does a fire warning occur in the cargo zones?

Back 16

If smoke is detected in ANY zones fire warning is triggered. The EICAS will display AFT, FWD or MAIN to identify the area

Front 17

How many fire extinguisher bottles are there for the lower cargo compartment?

Back 17

5

Front 18

On the ground if the CARGO FIRE DEPR/DISCH switch is pushed what happens?

Back 18

2 bottles discharge immediately and after a time delay the third bottle will discharge

Front 19

Pushing the MAIN DECK CARGO FIRE ARM switch does what? Then pushing the CARGO DEPR/DISCH switch will do....?

Back 19

One pack to OFF and the other pack to low flow

Initiates a controlled depressurization to a cabin altitude of 23,000' with airplane Altitude at 25,000'.

Front 20

Is there any fire detection in the crew rest?

Back 20

Smoke detectors, an aural alert will sound in the crew rest and an EICAS message will indicate

Front 21

Fire protection in the lavatory?

Back 21

Yes, a smoke detector that will sound an aural alert to both lavatory and SUPRNMRY area. An EICAS caution message will generate. There is an automatic fire extinguisher in the waste container cabinet. There is no flight deck indication if the bottle is being extinguished

Front 22

How is the system tested?

Back 22

Fire and overheat testing is automatic. The system will produce an EICAS message if a complete system failure occurs. No EICAS message for single loop operation.

Front 23

What is the definition of APU attended mode?

Back 23

Aircraft In flight

Aircraft on ground with atleast 1 engine operating

Front 24

What powers the fire bottles for the APU, Engine and lower cargo deck?

Back 24

Hot battery bus

Front 25

Pressing the MAIN DECK CARGO FIRE ARM switch does what?

Back 25

Configures 1 pack off and other to a low flow mode