B767

FireProtection

DONOTUSEFORFLIGHT

IntroductionThere are fire detection and extinguishing systems for the:

engines APU forward and aft cargo compartments lavatories

The main gear wheel wells have a fire detection system, but no fire extinguishing system. The system will not detect hot brakes alone, without an associated fire. Overheat detection systems are installed for both engines, struts, and pneumatic ducts in the wing and body areas.Refer to Chapter 2, Air Systems, for a description of equipment smoke evacuation, equipment overheat detection and bleed air duct leak.

Engine Fire ProtectionEngine fire protection consists of these systems:

engine fire and overheat detection engine fire warning engine overheat caution engine fire extinguishing

Engine Fire and Overheat DetectionThere are detector loops in each engine nacelle to provide both fire and overheat detection. The SYS FAIL light illuminates and the EICAS advisory message FIRE/OVHT SYS displays to indicate failure of the fire/overheat detection system. The SYS FAIL light and advisory message can be reset to allow monitoring of the remaining systems.

Engine Fire WarningThe indications of an engine fire warning are:

the fire bell sounds the master WARNING lights illuminate the engine fire switch LEFT or RIGHT fire warning light illuminates the discrete FIRE warning light illuminates the engine FUEL CONTROL switch fire warning light illuminates the EICAS warning message L or R ENGINE FIRE displays the engine fire switch unlocks

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The fire warning lights remain illuminated as long as the fire signal exists. The fire bell may be silenced by any of the following actions:

extinguishing the fire pushing either master warning/caution reset switch pulling the appropriate fire switch

Engine Overheat CautionThe indications of an engine overheat caution are:

the caution beeper sounds the master CAUTION lights illuminate the L or R ENG OVHT light illuminates the EICAS caution message L or R ENG OVHT displays

The overheat lights remain illuminated as long as the overheat condition exists.

Engine Fire ExtinguishingThere are two engine fire extinguisher bottles. Either or both bottles can be discharged into either engine.When an engine fire switch is pulled out, the associated engine:

fuel is shut off bleed valves are closed generator is tripped off hydraulic fluid is shut off to the engine-driven hydraulic pump fire extinguishing bottles are armed

Rotating the fire switch in either direction discharges a single extinguisher bottle into the associated engine. Rotating the engine fire switch in the other direction discharges the second extinguisher bottle into the same engine.If an extinguisher bottle is discharged or has low pressure:

the ENG BTL 1 or 2 DISCH light illuminates the EICAS advisory message ENG BTL 1 or 2 displays

Engine/APU Fire and Override SwitchesThe engine and APU fire switches are mechanically locked in the down position to avoid inadvertent activation. When a fire is detected, the respective switch is electrically unlocked and may then be pulled out. Manual unlocking of the switch is accomplished by pushing the fire override switch located beneath the fire switch.

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APU Fire ProtectionAPU fire protection consists of these systems:

APU fire detection APU fire warning APU fire extinguishing

APU Fire DetectionThere are fire detector loops in the APU compartment. There is no APU overheat detection. The SYS FAIL light illuminates and the EICAS advisory message FIRE/OVHT SYS displays to indicate failure of the APU fire detection system. The SYS FAIL light and advisory message can be reset to allow monitoring of the remaining systems.

APU Fire WarningThe indications of an APU fire warning are:

the fire bell sounds the master WARNING lights illuminate the APU fire warning light illuminates the discrete FIRE warning light illuminates the EICAS warning message APU FIRE displays the APU automatically shuts down the APU fire switch unlocks

In addition to the above APU fire warnings, if the airplane is on the ground the horn on the nose gear strut sounds and the fire warning light on the APU ground control panel illuminates.The fire warning lights remain illuminated as long as the fire signal exists. The fire bell (and horn if APU fire on the ground) may be silenced by any of the following actions:

extinguishing the fire pushing either master warning/caution reset switch pulling the APU fire switch pushing the APU fire shutdown switch if on the ground

APU Fire ExtinguishingOption - One APU Fire Extinguishing Bottle There is one APU fire extinguisher bottle. When the APU fire switch is pulled out, the APU:

fuel is shut off bleed air valve is closed

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generator is tripped off fire extinguishing bottle is armed

Rotating the switch in either direction discharges the extinguisher bottle into the APU compartment. When the bottle is discharged or has low pressure:

the APU BTL DISCH light illuminates the EICAS advisory message APU BTL displays

Main Gear Wheel Well Fire ProtectionThe main gear wheel well has fire detection and warning only. There is no fire extinguishing system. The nose gear wheel well does not have a fire detection system.

Main Gear Wheel Well Fire DetectionThe main wheel well fire detection system consists of a single fire detection loop.

Main Gear Wheel Well Fire WarningThe indications for a main wheel well fire are:

the fire bell sounds the master WARNING lights illuminate the WHL WELL FIRE warning light illuminates the discrete FIRE warning light illuminates the EICAS warning message WHEEL WELL FIRE displays

The fire warning lights remain illuminated as long as the fire signal exists. The fire bell may be silenced by any of the following actions:

extinguishing the fire pushing either master warning/caution reset switch

Cargo Compartment Fire ProtectionCargo compartment fire protection consists of these systems:

cargo compartment smoke detection cargo compartment fire warning cargo compartment fire extinguishing

Cargo Compartment Smoke DetectionThe forward and aft cargo compartments each have smoke detectors installedThe SYS FAIL light illuminates and the EICAS advisory message FIRE/OVHT SYS displays to indicate failure of the cargo compartment smoke detection system. The SYS FAIL light can be reset to allow monitoring of the remaining systems.

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Cargo Compartment Fire WarningThe indications of a cargo compartment fire are:

the fire bell sounds the master WARNING lights illuminate the FWD or AFT cargo fire warning light illuminates the discrete FIRE warning light illuminates the EICAS warning message FWD or AFT CARGO FIRE displays

The fire warning lights remain illuminated as long as the fire signal exists. The fire bell may be silenced by any of the following actions:

extinguishing the fire and clearing the smoke pushing either master warning/caution reset switch pushing the illuminated cargo compartment ARMED switch

Cargo Compartment Fire ExtinguishingFire extinguisher bottles are installed for cargo compartment fire extinguishing. Pushing the FWD or AFT cargo compartment ARMED switch arms the extinguishers for that compartment.Pushing the cargo fire bottle discharge switch initiates discharge of the fire bottles. The first bottle discharges immediately into the selected compartment. The CARGO BTL 1 advisory message is displayed on EICAS within a few seconds after pressing the cargo fire bottle DISCH switch. The second fire bottle discharges at a later time or at a reduced flow rate into the selected compartment. The CARGO BTL 2 advisory messages is displayed on EICAS within a few seconds after the bottle starts to discharge. The DISCH light illuminates when either bottle discharges.

Lavatory Fire ProtectionLavatory fire protection consists of these systems:

lavatory fire detection and annunciation automatic fire extinguishing in the lavatory waste container cabinet

Lavatory Fire Detection and AnnunciationEach lavatory has a single smoke detector. When smoke is detected, aural annunciations sound in the lavatory and in the cabin. Depending on configuration, cabin lavatory smoke detection annunciation will consist of a horn, a chime, a flashing lavatory call light or illumination of the master call light at the associated flight attendant station. There is no cockpit annunciation of smoke detected in a lavatory.

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Lavatory Fire ExtinguishingEach lavatory has a fire extinguisher located in the waste container cabinet, with:

automatic fire extinguisher operation no cockpit annunciations of lavatory fire extinguisher operations

Fire and Overheat Detection System Fault TestAutomatic testing of the engine fire and overheat detectors, APU fire detectors and cargo compartment smoke detectors occurs when electrical power is initially applied. The FIRE/OVHT test panel permits manual testing of the various fire and overheat sensors.

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Fire Protection EICAS Messages The following EICAS messages can be displayed.

Message Level Light Aural Condition

APU BTL Advisory APU BTL DISCH

APU fire extinguisher bottle pressure is low

APU FIRE Warning APU Fire Bell

Fire is detected in the APU

CARGO BTL 1

CARGO BTL 2

Advisory DISCH Cargo fire extinguisher bottle 1 or bottle 2 pressure is low

AFT CARGO FIRE

FWD CARGO FIRE

Warning AFT

FWD

Fire Bell

Smoke is detected in the affected cargo compartment

ENG BTL 1

ENG BTL 2

Advisory ENG BTL 1 DISCH

ENG BTL 2 DISCH

Engine fire extinguisher bottle 1 or bottle 2 pressure is low

L ENGINE FIRE

R ENGINE FIRE

Warning LEFT

RIGHT

Fire Bell

Fire is detected in the engine

L ENG OVHT

R ENG OVHT

Caution L ENG OVHT

R ENG OVHT

Beeper An overheat is detected in the engine

FIRE/OVHT SYS Advisory FAIL P-RESET

Fire or overheat detection is inoperative for loops as shown on the status page

WHEEL WELL FIRE Warning WHL WELL FIRE

Fire Bell

Fire is detected in a main wheel well

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Engine Fire ProtectionEngine Fire Panel

1 Engine Overheat (L/R ENG OVHT) Lights Illuminated (amber) engine overheat is detected

2 Engine Bottle Discharged (ENG BTL DISCH) Lights Illuminated (amber) the extinguisher bottle is discharged or has low pressure

3 Engine Fire SwitchesIn normal position, mechanically locked; unlocks automatically for fire warningOut closes the associated engine and spar fuel valves, and

closes the associated engine bleed air valves trips the associated engine generator off shuts off hydraulic fluid to the associated enginedriven hydraulic pump arms both engine fire extinguisher bottles

Rotate to position 1 or 2 discharges the selected fire extinguisher into the engine nacelle

4 Engine Fire Warning LightsIlluminated (red) an engine fire is detected

5 Engine and APU Fire Override Switches Push unlocks the respective engine or APU fire switch

DISCH21

L

DISCH21

THG

RI

ENG BTLENG BTL1 DISCH 2 DISCH

L ENGOVHT

R ENGOVHT

AFT AISLE STANDENGINE & APU

FIRE PANEL

EFT

5

1

2

3

4

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Fuel Control Switches

1 FUEL CONTROL Switch Fire Warning LightsIlluminated (red) an associated engine fire is detected

Fire Warning Light

1 FIRE Warning Light Illuminated (red) an engine, APU, wheel well, or cargo fire is detected

Cargo and APU Fire ProtectionCargo and APU Fire Panel

CONTROL STAND

RUN

FUEL CONTROL

CUT OFF

RL

1

CENTER FORWARD PANEL

FIRE1

BTL DISCHCARGO FIRE

FWD-ARM-AFT

DISCH

APUDISCH

DISCHAPU BTL

FWD

ARMED

AFT

ARMED

AFT AISLE STAND

1

2

34

5

7

6

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1 CARGO FIRE ARM Switches and LightsPush FWD ARMED Light Illuminates

arms all cargo fire extinguisher bottles turns off both recirculation fans

Push AFT ARMED Light Illuminates arms all cargo fire extinguisher bottles turns off both the recirculation fans inhibits high flow operation of both packs

Off normal position

2 CARGO FIRE Warning Lights (FWD or AFT) Illuminated (red) smoke is detected in associated cargo compartment

3 CARGO FIRE Bottle Discharge (BTL DISCH) SwitchPush discharges the fire extinguisher bottles into the ARMED cargo compartment

4 CARGO FIRE Bottle Discharged (DISCH) LightIlluminated (amber) either extinguisher bottle has discharged or has low pressure

5 APU Fire Bottle Discharged (APU BTL DISCH) LightIlluminated (amber) the extinguisher bottle is discharged or has low pressure

6 APU Fire Warning LightIlluminated (red) an APU fire is detected

7 APU Fire SwitchIn normal position, mechanically locked; unlocks automatically if fire warning occurs Out closes the APU fuel valve, and:

trips the APU generator off closes the APU air supply valve shuts down the APU arms the APU fire extinguisher bottle

Rotate either direction discharges the APU fire extinguisher into the APU compartment

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Wheel Well Fire Light

1 Wheel (WHL) WELL FIRE Warning Light Illuminated (red) a fire is detected in one or both of the main gear wheel wells

APU Ground Control Fire Protection Panel

CENTER FORWARD PANEL

FIREWHL WELL1

APU FIR

NOSE WHEEL STRU

EMER EXITLT TEST

WHEELWELLLIGHTS

S

NORM

LS

BOTTLEDISCHARGED

SHUTDOWNAPU BOTTLEDISCHARGE

FLIGHT DECKCALL

FL GHTINPH

SER ICEINPH

APU FIRE FIRE BOTTLEARMED

APU F REWARNINGHORN

LEVELMETER

SOUND

1

4

52

3 6

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1 APU Fire Warning Horn Sounds intermittently during ground operation for an APU fire

2 APU FIRE LightIlluminated (red) an APU fire is detectedThe APU automatically shuts down for a detected fire

3 APU FIRE SHUTDOWN Switch Push

closes the APU fuel valve and trips the APU generator off closes the APU air supply valve and shuts down the APU arms the APU fire extinguisher bottle

4 APU FIRE BOTTLE ARMED Light Illuminated (amber) - the APU fire extinguisher is armed

5 APU Fire BOTTLE DISCHARGED Light Illuminated (amber) - the APU fire extinguisher bottle is discharged or has low pressure

6 APU BOTTLE DISCHARGE Switch Push discharges the APU fire extinguisher bottle into the APU compartment

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Fire/Overheat Test Panel

1 Wheel (WHL) WELL Fire Test SwitchPush and hold initiates a wheel well fire test

2 System Fail (FAIL P RESET) Light Illuminated (amber) indicates the failure of the detectors in one of the following systems:

engine fire engine overheat APU fire cargo fire

3 System Fail (SYS FAIL) Reset Switch (FAIL P RESET)Push extinguishes the FAIL light and resets the monitor for other systems

4 ENG/APU/CARGO Test SwitchPush and hold initiates an engine, APU, and cargo fire/overheat test

AFT AISLE STAND

WHLWELL

ENG/APU/ SYS FAIL

FIRE/OVHT TEST

CARGO

P-RESETFAIL

2

3

4

1

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