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What events occur when pulling an engine fire switch up ?
Closes the engine fuel shutoff valve.
Closes the spar fuel shutoff valve.
Closes the engine bleed air valve. (Wing anti-ice is unavailable
and the pack valve will close.)
Trips the generator control relay and breaker.
Closes the hydraulic fluid shutoff valve and disarms the engine
driven pump LOW PRESSURE light.
Disables the thrust reverser for the related engine.
Allows the engine fire switch to be rotated for discharge.
Arms one discharge squib on each fire extinguishing bottle.
Closes the spar fuel shutoff valve.
Closes the engine bleed air valve. (Wing anti-ice is unavailable
and the pack valve will close.)
Trips the generator control relay and breaker.
Closes the hydraulic fluid shutoff valve and disarms the engine
driven pump LOW PRESSURE light.
Disables the thrust reverser for the related engine.
Allows the engine fire switch to be rotated for discharge.
Arms one discharge squib on each fire extinguishing bottle.
| Engine and APU Fire Protection |