-
Figure 018
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MCDU Page - SYSTEM TEST
Figure 019
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MCDU Page - CLASS 3 FAULTS, GROUND REPORT
Figure 020
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-<GROUND REPORT,
-<TEST,
-<CLASS 3 FAULTS.
(1)
<LAST LEG REPORT If you push the <LAST LEG REPORT line key, the screen shows for each failure that occurred during the last leg:
-
the date of the last leg,
-
the time the failure occured,
-
the ATA number of the component,
-
the functional designation of the component,
-
the FIN of the component.
The screen can show a maximum of two failures at a time. If there are
more failures, you must push the next page key on the MCDU keyboard.
If there are no failures, NO FAULT DETECTED is shown.
(2)
<PREVIOUS LEGS REPORT If you push the <PREVIOUS LEGS REPORT line key, the screen shows for each failure that has not been corrected from previous reports:
-
the applicable flight leg,
-
the date of the applicable flight leg,
-
the time the failure occured,
-
the flight phase where the failure occured,
-
the ATA number of the component,
-
the functional designation of the component,
-
the FIN of the component.
The screen can show a maximum of two failures at a time. If there are
more failures, you must push the next page key on the MCDU keyboard.
If there are no failures, NO FAULT DETECTED is shown.
(3)
<LRU IDENTIFICATION If you push the <LRU IDENTIFICATION line key, the screen shows the partnumber and the serial number of the faulty component.
(4)
<TEST If you push the <TEST line key, the <CAB TEMP CONT SYSTEM TEST page is shown. The screen shows: SELECT PACK 1 + 2 OFF. After you selected <START TEST and confirmed, the screen shows,
-(IN PROGRESS MAX 240S),
-TEST OK if there are no failures,
- or
-the ATA number, the functional designation, the FIN of the
component and CLASS of failure.
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(5) <CLASS 3 FAULTS If you push the <CLASS 3 FAULTS line key, the screen shows the LAST LEG CLASS 3 FAULTS:
-
the time when the failure occured,
-
the ATA number of the component,
-
the functional designation of the component,
-
the FIN of the component.
For each fault you can find the applicable TROUBLE SHOOT DATA by
selecting '>'.
The screen can show a maximum of two failures at a time. If there are
more failures, you must push the next page key on the MCDU keyboard.
If there are no failures, NO FAULT DETECTED is shown.
D. CFDS Maintenance Messages
(1)
The ACSC 2 57HH sends failure data collected from the ACSC's as well as those detected by its BITE to the Centralized Fault Display System (CFDS). A possible failure can be class 1, class 2 or class 3.
-
A class 1 failure requires immediate maintenance action, as they always lead to a loss of the affected system with operational consequences.
-
A class 2 failure will not lead to operational consequences but cannot be left uncorrected until the next scheduled maintenance check.
-Class 3 failure are failures which can be left uncorrected until the next scheduled maintenance check. The possible maintenance messages (class 1, 2, 3) provided by the zone controller are shown in the following tables.
(2)
Class 1 Maintenance Messages
NOTE : Test is available only if both pack flow-control valves are
____
shown closed on the ECAM BLEED page.
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