Loss of the Altitude Bus 2 of the RA Transceiver 2 Identified by the ECAM2
1. Possible Causes
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- XCVR-RA, 2 (2SA2)
- wiring of the ALTITUDE BUS 2 from the RA transceiver 2 (2SA2) to the first terminal block
2. Job Set-up Information
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A. Referenced Information
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REFERENCE DESIGNATION
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AMM 31-50-00-710-001 Ground Scanning of the Central Warning System 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
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A. Make sure that this(these) circuit breaker(s) is(are) closed:
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PANEL DESIGNATION IDENT. LOCATION
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121VU COM NAV/RAD ALTM/2 1SA2 K12
B. Test
(1) Do the operational test of the central warning systems (Ref. AMM TASK 31-50-00-710-001).
4. Fault Isolation
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A. If the test gives the maintenance message FWC2 : NO DATA FROM RA2:
- replace the XCVR-RA, 2 (2SA2) (Ref. AMM TASK 34-42-33-000-001) and (Ref. AMM TASK 34-42-33-400-001).
(1) If the fault continues:
- do a check and repair the wiring of the ALTITUDE BUS 2 from the RA transceiver 2 (2SA2) to the first terminal block (Ref. ASM 34-42/02).
B. Do the test given in Para. 3.B.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞34-42-00∞∞∞∞∞∞∞∞∞∞Page 229
Feb 01/05R CES
Failure of the RA Antennas 1
1. Possible Causes_______________
- XCVR-RA, 1 (2SA1)
- ANTENNA-RA RCPTN, 1 (5SA1)
- ANTENNA-RA XMSN, 1 (6SA1)
- wiring between the RA reception antenna 1 (5SA1) and the RA transceiver 1 (2SA1)
- wiring between the RA transmission antenna 1 (6SA1) and the RA transceiver 1 (2SA1)
2. Job Set-up Information______________________
A. Referenced Information
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REFERENCE DESIGNATION
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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 34-42/01
3. Fault Confirmation__________________
A. Test
(1) Do the BITE test of the radio altimeter (Ref. AMM TASK 34-42-00-740-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞34-42-00∞∞∞∞∞∞∞∞∞∞Page 230
Feb 01/05R
CES 4. Fault Isolation
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A. If the BITE test gives the maintenance message CHECK LRRA-1 ANTENNAE CIRCUITS:
- replace the XCVR-RA, 1 (2SA1) (Ref. AMM TASK 34-42-33-000-001) and (Ref. AMM TASK 34-42-33-400-001).
(1) If the fault continues:
- do a check of the wiring between the RA reception antenna 1 (5SA1) and the RA transceiver 1 (2SA1) (Ref. ASM 34-42/01).
(a) If there is no continuity:
- repair the above wiring.
(b) If there is continuity: 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 導航 NAVIGATION 3(38)
