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• the EICAS warning message FIRE APU is displayed
• the APU fire switch fire warning light illuminates
• the APU fire switch unlocks.
APU Fire Extinguishing
There is one APU fire extinguisher bottle. When the APU fire switch is pulled out,
rotating the switch in either direction discharges the extinguisher bottle into the
APU compartment. If the bottle is discharged or has low pressure:
• the APU BTL DISCH light illuminates
• the EICAS advisory message BOTTLE DISCH APU is displayed.
787 Flight Crew Operations Manual
Fire Protection -
System Description
8.20.4 Boeing Proprietary
An APU fire signal from either APU fire detector loop causes APU shutdown and
an automatic extinguisher bottle discharge after 10 second delay.
Main Wheel Well Fire Protection
The main wheel well has fire detection only. There is no fire extinguishing system.
The nose wheel well does not have a fire detection system.
Main Wheel Well Fire Detection
The main wheel well fire detection system consists of dual fire detector channels.
Main Wheel Well Fire Warning
The indications for a main wheel well fire are:
• the fire bell sounds
• the EICAS warning message FIRE WHEEL WELL is displayed
• the master WARNING lights illuminate.
Cargo Compartment Fire Protection
Cargo compartment fire protection consists of these systems:
• cargo compartment smoke detection
• cargo compartment fire extinguishing.
Cargo Compartment Smoke Detection
The forward and aft cargo compartments each have smoke detectors. Each
compartment is divided into three detection zones. If smoke is detected in any
zone, a fire warning occurs.
Whenever cargo compartment smoke detection is inoperative, the EICAS
advisory message DET FIRE CARGO (FWD or AFT) is displayed.
Cargo Compartment Fire Warning
The indications of a cargo compartment fire are:
• the fire bell sounds
• the master WARNING lights illuminate
• the EICAS warning message FIRE CARGO (FWD or AFT) is displayed
• the CARGO FIRE (FWD or AFT) fire warning light illuminates.
Cargo Compartment Fire Extinguishing
Five fire extinguisher bottles are installed for cargo compartment fire
extinguishing. Pushing the FWD or AFT CARGO FIRE ARM switch (ARMED
visible) arms the extinguishers.
787 Flight Crew Operations Manual
Fire Protection -
System Description
Boeing Proprietary 8.20.5
In flight with both engines running, a fire warning from the cargo fire detection
system causes the immediate total discharge of two extinguisher bottles into the
affected compartment. After a time delay, the remaining three extinguisher bottles
discharge at a reduced flow rate into the affected compartment. If the airplane
lands before all of the bottles discharge, one of the remaining bottles discharges at
the reduced rate on touchdown.
In flight, pushing the CARGO FIRE DISCHARGE switch also activates the
extinguishing system.
On the ground, if a CARGO FIRE DISCHARGE switch is pushed, two
extinguisher bottles discharge into the selected compartment, but only one of the
remaining extinguisher bottles discharges after the time delay.
When cargo fire extinguisher bottle discharge is initiated:
• The CARGO FIRE DISCHARGE switch light illuminates when the first
two extinguisher bottles begin to discharge.
• The EICAS advisory message BOTTLE DISCH CARGO is displayed
when the first two extinguisher bottles have completely discharged.
Crew Rest Compartment Fire Protection
Door 1 Upper Crew Rest Compartment Smoke Detection
Smoke detectors are installed in the door 1 upper crew rest compartment. The
EICAS caution message SMOKE REST UPR DR 1 indicates smoke in the
compartment.
Door 4 Upper Crew Rest Compartment Smoke Detection
Smoke detectors are installed in the door 4 upper crew rest compartment. The
EICAS caution message SMOKE REST UPR DR 4 indicates smoke in the
compartment.
Lavatory Fire Protection
Lavatory fire protection consists of these systems:
• lavatory fire detection
• lavatory waste container fire extinguishing.
Lavatory Fire Detection
Each lavatory has a single smoke detector. If smoke is detected, an aural alert
sounds in the lavatory and in the cabin. In addition, the lavatory call light flashes
and the master call light at the associated attendant station illuminates. The EICAS
advisory message SMOKE LAVATORY is displayed.
787 Flight Crew Operations Manual
Fire Protection -
System Description
8.20.6 Boeing Proprietary
Lavatory Fire Extinguishing
Each lavatory has two fire extinguisher bottles. Both bottles discharge at the same
　
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