A320 CH26

1.       LOOPS MONITORED BY 3 FDU (FIRE DET UNIT) AND SENT TO FWC

2.       WHEN FIRE P/B RELEASE OUT :

a.       FUEL,HYD,ELEC,BLEED CUT

b.      EXTINGUISH SYS ARM

c.       SQUIB AND FIRE LIT’S ON

3.       DISCH LIT ON WHEN BOTTLES EMPETY

4.       APU HAS ONE BOTTLE IN FWD OF FIREWALL AND ENG ‘S HAS 2 IN PYLON ACCESS FROM BOTH SIDE

5.       APU EXTING SYS CAN TEST ON O/H PNL

6.       AEVC(AVIONIC EQUIP VENT CONT) MONITORS AV COOLING

7.       1 SMOKE DET INSTALLED ON EXT DUCT IN AV COMPARTMENT

8.       AV SMOKE IND:

1.       EMER ELEC PNL: SMOKE LIT ON GEN1 LINE P/B

2.       VENT PNL: FAULT LIT ON BLOWER AND EXT FAN P/B

9.       CARGO & LAV SMOKE DET :

a.       CLASSIC: SDCU (SMOKE DET CONT UNIT)

b.      ENHANCED: CIDS (CABIN INTERCOM DATA SYS) WHICH INCLUDED SDF (SMOKE DET FUNCTION)

10.   EACH CARGO HAS 2 SMOKE DET AND 1 BOTTLE FOR BOTH CARGO (2 IS OPTION)

 

B747 CHAPTER 26

26

1. FIRE PROTEC:

                 ENG: FIRE PROTEC + EXTINGUISH SUPP BY 28VDC BATT AND HOT BUS

                     APU: SAME AS ENG’S

                     W/W: OVERHEAT DET SUPP BY 115VAC FROM AC ESS + 28VDC FROM BAT BUS

2. FIRE DET LOGICS DONE BY RELAYS

3. ENG FIRE HANDLE PULLED:

                                            FUEL VLV CLOSE

                                            PYLON VLV CLOSE

                                            HYD S/O CLOSE

                                            GEN TRIP WITH MAX 10 SEC DELAY

                                            HYD PUMP DEPRESS

                                            FIRE EXTINGUISH ARM

4. BOTTLE LOW PRESS RESET DONE BY CB (MUST RESET AFTER BOTTLE CHANGE)

5. DET CARDS CONSIST OF:

                                            SUPP LOOPS

                                            OUTPUT TO IND AND WARN SYS

                                            FAULT AND FIRE AND SHORT CIRCUIT DISCRIMINATOR