B747-100/200/300 INSTRUMENT-CIWS

CIWS

1.      THERE IS CLACKER RELAY  WHICH WHEN DE-ENERG CLACKER WILL ACTIVE

2.      IF NAV FAIL THEN WE HAVE INST WARNING

3.      IWC(INST WARNING COMPARATOR) IN MAIN EQUIP CENTER E11

4.      IWC RECEIVE :

                                  HDG FROM INS OR COUPLER DEPENDS ON INS/RAD SW

                                  ATT FROM ADI AND INS

LRRA WHEN ALT MORE THAN 50FT

VOR,LOC,G/S

*ALL FLAG CAUSE INST WARNING FLASH RED

         5. TEST SW AND ANN LIT SW IS IN P1 AND P3

         6. A COMPARATOR WARNING MODULE IS IN P44 ,P45

7.  PRESS THE TEST SW SIMULATES FAILUIRES:

                                                                       INST LIT FLASH

                                                                       ATT,MON STEADY AMBER

AURAL WARN

        

1.      MON LIT ON WHEN COMPARATOR POWER LOST (POWERED FROM ESS FLT INST BUS)

2.      ATT LIT ON WHEN DIFF MORE THAN 4 DEG

3.      L/G CONFIG TEST GIVES STEADY HORN AND T/O CONFIG INTRUPT HORN

4.      TAT/EPR LIMIT COMPUTER IN E2-1 HAS 3 LIT IN FRONT : MDTR , MODE PNL , TAT

5.      LIMIT COMPUTER SENDS EPR LIMIT TO :

                                                               RATE IND

                                                               A/THR TRP

                                                               EPRL IND ON P2

6.   IND SENDS TAT TO DIGITAL COMPUTER

7.   EPRL IS BASED ON ALT AND MACH FROM ADC1 AND ENG BLEED AND TAT FROM IND

8.   EPRL DECREASED WHEN ENG BLEED IS USING

9.   COUPLER HAS 2 MODES:

                                               DG: ABOVE 65 DEG NORTH IS USED, IND IS INOP

                                               SLAVE: FLUX VLV CORRECTS INS DATA HDG

·                     IND SHOWS DIRECTION OF SYNCH ERROR

10.  HSI SHOWS :

                        TRUE HDG IF INS SELECTED AS INPUT

                        MAG HDG IF RAD SELECRED

                        GND SPD FROM INS

                        DISTANCE TO NEXT WAYPOINT FROM IRS

TO/FROM POINTER

DEV BAR (CROSS TRACK, RADIO)

DRIFT ANGLE

A/S

11.  A TRANSFER SW ALLOW CAPT OR F/O TO SELECT :    

VOR/ILS #3,ATT#3,COMPASS #2 OR #1

F/D A OR B, INS #3

12.  INS FAST SYNCH START FROM 7S AFTER INITIAL POWER

                  SLOW (NORM) SYNCH IF HDG ERR BELOW 2 DEG

13.  COUPLER SEND AN EXCITATION POWER (23.5VAC) TO COMPENSATOR

14.  FAST SYNCH : PUT  SLAVE/DG SW TO DG THEN BACK

15.   STBY ATT REF UNIT(STBY HORIZON) POWERED 115VAC 3 PHASE  FROM STATIC INV IN                            E10(UPPER EQUIP)

16.     DFDR IS IN E8 ( AFT EQUIP CNTR)

17.     AN ACCELEROMETER FOR DFDR IN R/H W/W SENDS 3 AXIS ACC

18.     DFDAU IN MAIN EQUIP CNTR (E3-5) HAS CAPIBILTY OF 256 INPUT CONVERT TO 4 FORMATS

19.     DFDR RECORDS LAST 25HR BY 2 HEAD , 2 HEAD FOR READ,2 HEAD FOR EARASE

20.     DFDR POWERED IF SW ON POS OR ENG RUN OR A/C IN FLT

21.     MAG COMPENSATOR AND COMPASS COUPLER ARE IN E1-1

22.     INS NEED ALT FOR GYMBALLING ERROR CORRECTION