(2) - closes the HP and LP fuel shut off valves and consequently shut down the engine.
-
ENG 1 FIRE P/B......PUSH . Push the ENG/FIRE pushbutton switch, which:
(2) - closes the engine bleed air system
-confirms the closure of the LP fuel shut off valve
-de-energizes the IDG
-closes the hydraulic shuts off valve
-lights on the SQUIB legends associated to two fire extinguisher bottles (AGENT 1 and 2)
-stops the Aural Warning: the Continuous Repetitive Chime (CRC)
-AGENT 1 AFT 10 S...DISCH . Wait 10 seconds: this is the time required for the engine to reach the windmilling
* Count down from 10 S to rate in flight. At this rating the 0 S. The line disappears efficiency of the fire extinguishing at 0 S. procedure is optimum.
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-------------------------------------------------------------------------------DISPLAY ACTIONS -------------------------------------------------------------------------------
-AGENT 1............DISCH . Squib the fire extinguisher bottle 1 by
pushing the AGENT 1 pushbutton switch.
* This line appears at The amber DISCH legend comes on when the
the end of the countdow. engine fire extinguisher bottle is
completely discharged.
-ATC...............NOTIFY . A distress signal is received by the air controllers through the Air Traffic Control (ATC) system. It provides identification and altitude of the aircraft. This enables quicker handling of the air traffic and improves safety.
-IF FIRE AFTER 30 S: . If the FIRE legend is still on after
AGENT 2............DISH 30 seconds, the second fire extinguisher bottle is fired (AGENT 2).
* Count down from 30 S to 0 S. Line disappears when count down to 0 S.
8. BITE Test_________
A. Operational Test
(Ref. Fig. 006)
The operational test enables the pilot to monitor and activate the fire protection system. This test is part of the daily check-list and is available each time it is needed, on the ground or in flight.
You can do the operational test of the fire extinguishing system by pushing the TEST pushbutton switch (one per engine) located on the ENG/APU FIRE panel.
NOTE : The TEST pushbutton switch must be held during the whole test
____ duration. The response time of the test is lower than 1 second.
The ENG/APU FIRE panel (1WD) provides the test logics and ensures the electrical continuity of:
-
the firing circuitry of the fire extinguisher bottle
-
the low pressure warning circuitry of the fire extinguisher bottle.
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