787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Fire Protection -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 8.20.3
Engine Fire Extinguishing
There are two fire extinguisher bottles. Either or both bottles can be discharged
into either engine.
When the engine fire switch is pulled out, 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 remaining
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 BTL (1 or 2) DISCH ENG shows
Left Engine
DISCH
L
E
F
T
12
R
I
G
H
T
DISCH
12
ENG BTL
1 DISCH
ENG BTL
2 DISCH
Squib
Right Engine
1
2
ENGINE FIRE EXTINGUISHING DIAGRAM
August 14, 2009