AIRPLANE
OPERATIONS
MANUAL
FIRE PROTECTION
REVISION 40
2-07-15
Page
1
Code
02
AOM-145/1114
LAVATORY FIRE PROTECTION SYSTEM
The information presented herein is valid for airplanes Post-Mod.
SB 145-26-0014-00 or equipped with an equivalent modification
factory incorporated.
LAVATORY SMOKE DETECTION
The lavatory smoke detection system consists of a smoke sensor
installed in the lavatory ceiling and a Smoke Detector Panel located
near the forward galley.
Upon detection of smoke inside the lavatory, the smoke detector
signals the panel to activate a red alarm flashing light and a horn. In
addition, a warning message is presented on the EICAS. The smoke
sensor is less sensitive to smoke from cigarettes.
LAVATORY FIRE EXTINGUISHING
A single fire extinguisher bottle is installed for fire protection of the
lavatory waste container.
The bottle discharging tube outlets are fitted to the waste container,
and are provided with temperature sensitive heads. Discharge of the
extinguishing agent is accomplished by sensitive heads melting under
high temperatures, which opens an outlet passage.
No warning is provided in the cockpit when the waste container
extinguisher bottle is discharged.
EICAS MESSAGE
TYPE MESSAGE MEANING
WARNING LAV SMOKE
Smoke has been detected
inside the lavatory.
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