2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 34-42-00-740-002  BITE Test of the Radio Altimeter
 AMM 34-42-11-000-001  Removal of the Radio Altimeter Antennas 5SA1, 5SA2, 6SA1, 6SA2
 AMM 34-42-11-400-001  Installation of the Radio Altimeter Antennas 5SA1, 5SA2, 6SA1, 6SA2
 AMM 34-42-33-000-001  Removal of the Radio Altimeter Transceiver 2SA1 and 2SA2
 AMM 34-42-33-400-001  Installation of the Radio Altimeter Transceiver 2SA1 and 2SA2
 ASM 34-42/02
 3. Fault Confirmation__________________
 **ON A/C 001-004,
 Post SB 34-1171 For A/C 001-004,
 A. Test
 (1) Do the BITE test of the radio altimeter (system 2) (Ref. AMM TASK 34-42-00-740-002).

 4. Fault Isolation
_______________
 **ON A/C 001-004,
 Post SB 34-1171 For A/C 001-004,
 A. If the test gives the maintenance message RA2 ANTENNA (5SA2):
 - remove the ANTENNA-RA RCPTN, 2 (5SA2) (Ref. AMM TASK 34-42-11-000-001)

 - remove the XCVR-RA, 2 (2SA2) (Ref. AMM TASK 34-42-33-000-001)

 - do a check of the wiring between the RA transceiver 2 (2SA2) and the RA reception antenna 2 (5SA2) (Ref. ASM 34-42/02).

 (1) If there is continuity:

 - install a new RA reception antenna 2 (5SA2) (Ref. AMM TASK 34-42-11-400-001).

 - install the RA transceiver 2 (2SA2) (Ref. AMM TASK 34-42-33-400-001).

 (2) If there is no continuity:

 - repair the wiring between the RA transceiver 2 (2SA2) and the RA reception antenna 2 (5SA2)>: pin AA/C of the RA transceiver 2 (2SA2) (Ref. ASM 34-42/02)

 - install the RA transceiver 2 (2SA2) and the RA reception antenna 2 (5SA2).

 (a) If the fault continues:
 - replace the XCVR-RA, 2 (2SA2) (Ref. AMM TASK 34-42-33-000-001) (Ref. AMM TASK 34-42-33-400-001).
 B. Do the test given in para. 3.

 TASK 34-42-00-810-836
 Failure of the RA Transmission Antenna 2
 1. Possible Causes_______________
 - ANTENNA-RA XMSN, 2 (6SA2)

 - XCVR-RA, 2 (2SA2)

 - wiring between the RA transceiver 2 (2SA2) and the RA transmission antenna 2 (6SA2)

 2. Job Set-up Information______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 34-42-00-740-002  BITE Test of the Radio Altimeter
 AMM 34-42-11-000-001  Removal of the Radio Altimeter Antennas 5SA1, 5SA2, 6SA1, 6SA2
 AMM 34-42-11-400-001  Installation of the Radio Altimeter Antennas 5SA1, 5SA2, 6SA1, 6SA2
 AMM 34-42-33-000-001  Removal of the Radio Altimeter Transceiver 2SA1 and 2SA2
 AMM 34-42-33-400-001  Installation of the Radio Altimeter Transceiver 2SA1 and 2SA2
 ASM 34-42/02
 3. Fault Confirmation__________________
 **ON A/C 001-004,
 Post SB 34-1171 For A/C 001-004,
 A. Test
 (1) Do the BITE test of the radio altimeter (system 2) (Ref. AMM TASK 34-42-00-740-002).

 4. Fault Isolation
_______________
 **ON A/C 001-004,
 Post SB 34-1171 For A/C 001-004,
 A. If the test gives the maintenance message RA2 ANTENNA (6SA2):
 - remove the ANTENNA-RA XMSN, 2 (6SA2) (Ref. AMM TASK 34-42-11-000-001)

 - remove the XCVR-RA, 2 (2SA2) (Ref. AMM TASK 34-42-33-000-001)

 - do a check of the wiring between the RA transceiver 2 (2SA2) and the RA transmission antenna 2 (6SA2) (Ref. ASM 34-42/02)

 (1) If there is continuity:

 - install a new RA transmission antenna 2 (6SA2) (Ref. AMM TASK 34-42-11-400-001)

 - install the RA transceiver 2 (2SA2) (Ref. AMM TASK 34-42-33-400-001).

 (2) If there is no continuity:

 - repair the wiring between the RA transceiver 2 (2SA2) and the RA transmission antenna 2 (6SA2): pin AB/C of the RA tranceiver 2 (2SA2) (Ref. ASM 34-42/02).

 - install the RA transceiver 2 (2SA2) and the RA transmission antenna 2 (6SA2).

 (a) If the fault continues:
 - replace the XCVR-RA, 2 (2SA2) (Ref. AMM TASK 34-42-33-000-001) (Ref. AMM TASK 34-42-33-400-001).
 B. Do the test given in para. 3.

R **ON A/C ALL

 TASK 34-42-00-810-837
　
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