The APU automatically shuts down for a detected fire.
![](https://www.smartcockpit.com/wp-content/uploads/2024/04/B787-APU.jpg)
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Wrong!
The main wheel well fire and overheat detection system consists of:
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The fire and overheat detection system has:
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APU Fire Extinguishing - During an n APU fire signal and after the APU is shutdown, the APU extinguisher bottle is:
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Cargo compartment fire protection consists of:
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On the ground with both engines off an APU fire signal from either APU fire detector loop causes:
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Lavatory Fire Extinguishing
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There is no flight deck indication.
Each lavatory is equipped with:
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Wrong!
The main gear wheel wells has two distinct fire detection and fire extinguishing systems.
![](https://www.smartcockpit.com/wp-content/uploads/2024/04/B787-Main-Gear-Wheel-Well-Ian-Abbott.jpg)
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If smoke is detected in a lavatory, an aural alert sounds in:
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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.
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APU Bottle Discharge (APU BTL DISCH) Light – If illuminated amber:
![](https://www.smartcockpit.com/wp-content/uploads/2024/04/B787-APU-Fire-Protection.jpg)
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There are ______fire extinguisher bottles are installed for cargo compartment fire extinguishing. Pushing the FWD or AFT CARGO FIRE ARM switch (ARMED visible) arms the extinguishers.
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Lavatory Fire Extinguishing - Each lavatory has two fire extinguisher bottles. Each bottle discharges through two nozzles into the waste container.
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Each lavatory has only one fire extinguisher bottle. The bottle discharges through two nozzles into the waste container.
There are multiple dual-channel detector assemblies in each engine nacelle. Each detector channel provides both fire and overheat detection. If a fault is detected in one channel, the remaining channel element automatically switches to single channel operation.
![](https://www.smartcockpit.com/wp-content/uploads/2024/04/B787-Engine-Fire-Protection.jpg)
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The EICAS advisory message DET FIRE ENG (L or R) is displayed if the engine fire detection system fails.
The bulk cargo compartment is not included in the AFT cargo fire detection and extinguishing systems.
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The bulk cargo compartment is included in the AFT cargo fire detection and extinguishing systems.
Turbine overheat detection is provided in addition to engine fire and engine overheat detection. A turbine overheat event is annunciated with the same flight deck indications as an engine overheat (OVERHEAT ENG L, R).
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Boeing 787 – Fire protection