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 (a) If the fault continues:
 - do a check and repair the wiring of the LANDING GEAR discrete from the GPWC (1WZ) to the LGCIU1 (5GA1) (Ref. ASM 34-48/01).
 B. Do the test given in Para. 3.

 Loss of the RA1 Input
 1. Possible Causes
_______________
 - GPWC (1WZ)

 - wiring of the RADIO HEIGHT DATA INPUT bus from the GPWC (1WZ) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-48-00-740-002 BITE Test of the GPWS
 AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC
 AMM 34-48-34-000-001 Removal of the GPWC (1WZ)
 AMM 34-48-34-400-001 Installation of the GPWC (1WZ)
 ASM 34-48/01

 3. Fault Confirmation
__________________
 **ON A/C 001-049, 051-060, 101-104,

 A. Test
 (1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
R **ON A/C 061-099, 105-149, 151-199, 201-299, 301-399, 401-499,
 A. Test
 (1) Do the BITE test of the GPWS (Ref. AMM TASK 34-48-00-740-002).

R **ON A/C ALL

 4. Fault Isolation
_______________
 A. If the BITE test gives the maintenance message RA1 (1SA1)/GPWC (1WZ):
 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the RADIO HEIGHT DATA INPUT bus from the GPWC (1WZ) to the first terminal block (Ref. ASM 34-48/01).
 B. Do the test given in Para. 3.

 Loss of the ILS1 Input or Glide Slope Deviation
 1. Possible Causes
_______________
 - GPWC (1WZ)

 - wiring of the ILS DATA INPUT bus from the GPWC (1WZ) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC
 AMM 34-48-34-000-001 Removal of the GPWC (1WZ)
 AMM 34-48-34-400-001 Installation of the GPWC (1WZ)
 ASM 34-48/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
 4. Fault Isolation
_______________ R **ON A/C 001-004, 051-060,
 A. If the BITE test gives the maintenance message ILS1 (2RT1)/GPWC (1WZ):
 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the ILS DATA INPUT bus from the GPWC (1WZ) to the first terminal block (Ref. ASM 34-48/01).

 **ON A/C ALL 
R R  Post SB Post SB  34-1147 For A/C 001-004,051-060, 34-1189 For A/C 001-004,051-060,
 A. If the BITE test gives the maintenance message MMR1 (40RT1)/GPWC (1WZ): - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
 (1) If the fault continues: - do a check and repair the wiring of the ILS DATA INPUT bus from the GPWC (1WZ) to the first terminal block (Ref. ASM 34-48/01).
 **ON A/C ALL
 B. Do the test given in Para. 3.

 

 TASK 34-48-00-810-806 Loss of the ADR Input or Computed Airspeed
 1. Possible Causes
_______________
 - GPWC (1WZ)

 - wiring of the AIR DATA INPUT bus from the GPWC (1WZ) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC AMM 34-48-34-000-001 Removal of the GPWC (1WZ) AMM 34-48-34-400-001 Installation of the GPWC (1WZ) ASM 34-48/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
 4. Fault Isolation
_______________
 A. If the BITE test gives the maintenance message ADIRU1 (1FP1)/GPWC (1WZ):
 - replace the GPWC (1WZ) (Ref. AMM TASK 34-48-34-000-001) and (Ref. AMM TASK 34-48-34-400-001).
　
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