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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