Loss of the Altitude Bus 2 of the RA Transceiver 1 Identified by the GPWS
1. Possible Causes
_______________
- XCVR-RA, 1 (2SA1)
- wiring of the ALTITUDE BUS 2 from the RA transceiver 1 (2SA1) to the first terminal block
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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
AMM 34-48-00-740-002 BITE Test of the Enhanced GPWC
ASM 34-42/01
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU COM NAV/RAD ALTM/1 1SA1 K11
B. Test
(1) Do the BITE test of the Enhanced GPWS (Ref. AMM TASK 34-48-00-740-002).
4. Fault Isolation
_______________
A. If the test gives the maintenance message RA1 (1SA1)/GPWC (1WZ):
- 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 and repair the wiring of the ALTITUDE BUS 2 from the RA transceiver 1 (2SA1) to the first terminal block (Ref. ASM 34-42/01).
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 220
Feb 01/05R CES
Loss of the Altitude Bus 2 of the RA Transceiver 2 Identified by the CFDS
1. Possible Causes
_______________
- 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
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 31-32-00-869-002 Procedure for Class 3 Faults Reading 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
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
121VU COM NAV/RAD ALTM/2 1SA2 K12
B. Test On the CFDS MENU page, get access to the AVIONICS STATUS page (Ref. AMM TASK 31-32-00-869-002).
4. Fault Isolation
_______________
A. If the test gives the maintenance message NO RA2 DATA:
- 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).
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