AIRCRAFT SYSTEMS MAINTENANCE SYSTEM

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3 PRELIMINARY PAGES - TABLE OF CONTENTS DSC Description GENERAL... A COMPONENTS...B MODES OF OPERATION... C Architecture...D FAILURE/FAULT CLASSIFICATION...E FUNCTIONS OF THE CENTRALIZED FAULT DISPLAY SYSTEM (CFDS)...F COCKPIT/CFDS INTERFACE... G DSC System Operation Maintenance Menu... A LAST (or CURRENT) LEG REPORT...B Last (or Current) Leg ECAM Report...C PREVIOUS LEGS REPORT... D AVIONICS STATUS...E SYSTEM REPORT/TEST... F GMT/DATE INITIALIZATION...G BACK UP MODE...H ACARS Print Program... I DSC PRINTER GENERAL... A SYSTEM DESCRIPTION...B DSC ELECTRICAL SUPPLY BUS EQUIPMENT LIST... A 82U A318/A319/A320/A321 FLEET DSC-45-PLP-TOC P 1/2 FCOM 15 FEB 13

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5 PRELIMINARY PAGES - SUMMARY OF HIGHLIGHTS Localization Title DSC FAILURE/FAULT CLASSIFICATION DSC FAILURE/FAULT CLASSIFICATION DSC Last (or Current) Leg ECAM Report - Post Flight Report Print DSC Last (or Current) Leg ECAM Report- Post Flight Report Print DSC ACARS Print Program Toc Index ID Reason E 1 Effectivity update: The information no longer applies to MSN E 2 Effectivity update: The information no longer applies to MSN C 1 Effectivity update: The information no longer applies to MSN C 2 Effectivity update: The information no longer applies to MSN I 3 Effectivity update: The information no longer applies to MSN U A318/A319/A320/A321 FLEET DSC-45-PLP-SOH P 1/2 FCOM 06 MAR 14

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7 DESCRIPTION Ident.: DSC / 09 DEC 09 GENERAL The purpose of the Centralized Fault Display System (CFDS) is to make the maintenance task easier by displaying fault messages in the cockpit and permitting the flight crew to make some specific tests. There are two levels of maintenance : at the line stop : removal and replacement of equipment at the main base : troubleshooting Ident.: DSC / 09 DEC 09 COMPONENTS The CFDS includes : the BITE (Built-In Test Equipment) for each electronic system a central computer, the Centralized Fault Display Interface Unit (CFDIU) two MCDUs (Multipurpose Control and Display Units), used also for FMGS (Flight Management and Guidance System), AIDS (Aircraft Integrated Data System), and ACARS (Aircraft Communication And Reporting System, if installed), which work with the CFDIU to display information or initiate tests one printer. If a main channel of the CFDIU fails, the backup channel takes over. Ident.: DSC / 09 DEC 09 MODES OF OPERATION The CFDS operates in two main modes : the NORMAL mode or REPORTING mode (in flight) the INTERACTIVE mode or MENU mode (on ground). In NORMAL mode, the CFDS records and displays the failure messages transmitted by each system BITE. In INTERACTIVE mode, the CFDS allows any BITE to be connected with the MCDU in order to display the maintenance data stored and formatted by the BITE or to initiate a test. 82U A318/A319/A320/A321 FLEET DSC P 1/6 FCOM A to C 06 MAR 14

8 DESCRIPTION ARCHITECTURE Ident.: DSC / 24 APR 12 82U A318/A319/A320/A321 FLEET DSC P 2/6 FCOM D 06 MAR 14

9 DESCRIPTION Ident.: DSC / 14 NOV 11 1 Applicable to: MSN 0189 FAILURE/FAULT CLASSIFICATION The Centralized Fault Display System (CFDS) identifies the faulty system and puts any failures or faults into one of three classes : Class 1 : Failures indicated to the flight crew by means of the ECAM, or other flight deck effect. They must be repaired or entered in the MEL (Minimum Equipment List) before the aircraft can depart. Class 2 : Faults indicated to maintenance personnel by the CFDS and which trigger a MAINT status entry on the maintenance part of the ECAM status page. The aircraft can operate with these faults, but they must be rectified within the timescale defined in the Trouble Shooting Manual (TSM). Class 3 : Faults indicated to maintenance personnel by the CFDS, but which do not trigger a MAINT status. The operator may have these faults corrected at his convenience. Failure/fault classes Class 1 Class 2 Class 3 Operational YES NO NO consequences Indication to the flight crew YES NO Dispatch consequences Indication to the maintenance team Automatically displayed Warning or caution messages on Engine Warning Display Flag or indication in the flight deck. Refer to MEL may be : "GO" "GO IF" "NO GO" YES Automatically print out at the end of each flight : Fault messages on the CFDS Post Flight Report. YES Available on ECAM status page. Refer to MMEL/MI ECAM and MAINTENANCE STATUS MEL not applicable YES Available on request through system report/test 82U A318/A319/A320/A321 FLEET DSC P 3/6 FCOM E 06 MAR 14

10 DESCRIPTION Ident.: DSC / 14 NOV 11 2 Applicable to: MSN 0112, 0342 FAILURE/FAULT CLASSIFICATION The Centralized Fault Display System (CFDS) identifies the faulty system and puts any failures or faults into one of three classes : Class 1 : Failures indicated to the flight crew by means of the ECAM, or other flight deck effect. They must be repaired or entered in the MEL (Minimum Equipment List) before the aircraft can depart. Class 2 : Faults indicated to maintenance personnel by the CFDS and which trigger a MAINT status entry on the maintenance part of the ECAM status page. The aircraft can operate with these faults, but they must be rectified within the timescale defined in the Trouble Shooting Manual (TSM). Class 3 : Faults indicated to maintenance personnel by the CFDS, but which do not trigger a MAINT status. The operator may have these faults corrected at his convenience. Failure/fault classes Class 1 Class 2 Class 3 Operational YES NO NO consequences Indication to the flight crew YES NO Dispatch consequences Indication to the maintenance team Automatically displayed Warning or caution messages on Engine Warning Display Flag or indication in the flight deck. Refer to MEL may be : "GO" "GO IF" "NO GO" YES Automatically print out at the end of each flight : Fault messages on the CFDS Post Flight Report. YES Available on ECAM status page. Refer to MMEL/MI ECAM and MAINTENANCE STATUS MEL not applicable YES Available on request through system report/test 82U A318/A319/A320/A321 FLEET DSC P 4/6 FCOM E 06 MAR 14

11 DESCRIPTION FUNCTIONS OF THE CENTRALIZED FAULT DISPLAY SYSTEM (CFDS) Ident.: DSC / 01 OCT 12 The main functions of the CFDS are : obtaining and storing messages transmitted by the connected system BITEs, or by the Flight Warning Computer (Warning and Caution titles) Detailing the maintenance phases. Presenting maintenance reports : Last leg report Last leg ECAM report Previous leg report Avionics status System report test Post-flight report. 82U A318/A319/A320/A321 FLEET DSC P 5/6 FCOM F 06 MAR 14

12 DESCRIPTION Ident.: DSC / 19 DEC 12 COCKPIT/CFDS INTERFACE 82U A318/A319/A320/A321 FLEET DSC P 6/6 FCOM G 06 MAR 14

13 SYSTEM OPERATION Ident.: DSC / 14 MAY 12 MAINTENANCE MENU The CFDS uses menus displayed on the MCDU. The operator selects functions or reports from these menus. Pressing the MCDU MENU key and then selecting CFDS brings up the MAINTENANCE MENU page (different pages for the aircraft in flight and the aircraft on the ground). 82U A318/A319/A320/A321 FLEET DSC P 1/14 FCOM A 06 MAR 14

14 SYSTEM OPERATION Ident.: DSC / 01 OCT 12 LAST (OR CURRENT) LEG REPORT The LAST LEG REPORT (on the ground) or the CURRENT LEG REPORT (in flight), list all class 1 failures and class 2 faults and all system failure and system fault messages received by the CFDS during the last flight leg or the current flight leg. Pressing the IDENT key displays a list of the systems 82U A318/A319/A320/A321 FLEET DSC P 2/14 FCOM A to B 06 MAR 14

15 A318/A319/A320/A321 SYSTEM OPERATION (called identifiers) affected by the failure or fault, which helps the pilot or maintenance person to identify the failure or fault. Ident.: DSC A / 09 DEC 09 GENERAL LAST (OR CURRENT) LEG ECAM REPORT In flight : The CURRENT LEG ECAM REPORT displays the primary and independent warning (class I) messages and MAINTENANCE STATUS (class II) messages of the current flight leg. On the ground : The LAST LEG ECAM REPORT displays the primary and independent warning (class I) messages plus MAINTENANCE STATUS (class II) messages of the last flight leg. 82U A318/A319/A320/A321 FLEET DSC P 3/14 FCOM B to C 06 MAR 14

16 SYSTEM OPERATION Note: This screen displays PRINT only if the printer is installed. Ident.: DSC A / 14 MAY 12 1 Applicable to: MSN 0112, 0342 POST FLIGHT REPORT PRINT At the end of a flight, LAST LEG and LAST LEG ECAM REPORTS are printed out automatically after the last engine shutdown. The flight or ground crew can also print them out by selecting POST FLIGHT REP PRINT. The report first lists the ECAM warnings, then the FAULT messages. 82U A318/A319/A320/A321 FLEET DSC P 4/14 FCOM C 06 MAR 14

17 SYSTEM OPERATION Ident.: DSC A / 14 MAY 12 2 Applicable to: MSN 0189 POST FLIGHT REPORT At the end of a flight, LAST LEG and LAST LEG ECAM REPORTS are printed out automatically after landing (30 s after reaching 80 kt). The flight or ground crew can also print them out by selecting POST FLIGHT REP PRINT. It is also automatically sent to the ground, using ACARS system after the last engine shutdown, or manually by selecting the SEND key. 82U A318/A319/A320/A321 FLEET DSC P 5/14 FCOM C 06 MAR 14

18 SYSTEM OPERATION Ident.: DSC / 01 OCT 12 PREVIOUS LEGS REPORT This report gives access to the POST FLIGHT REPORTS of the previous 63 flight legs. 82U A318/A319/A320/A321 FLEET DSC P 6/14 FCOM C to D 06 MAR 14

19 SYSTEM OPERATION On ground, the Operator can print copies of the screen. If ACARS is installed, the Operator can send the flight report (Refer to DSC Last (or Current) Leg ECAM Report - Post Flight Report Print). Ident.: DSC / 09 DEC 09 AVIONICS STATUS This screen displays the list of systems affected by a failure or fault. If a system is affected by at least a Class 3 fault, CLASS 3 appears beside it. The display is continuously updated. 82U A318/A319/A320/A321 FLEET DSC P 7/14 FCOM D to E 06 MAR 14

20 SYSTEM OPERATION Ident.: DSC / 19 DEC 12 SYSTEM REPORT/TEST This screen gives the operator access to all electronic systems. The CFDIU enters into interactive dialogue with the selected system. 82U A318/A319/A320/A321 FLEET DSC P 8/14 FCOM E to F 06 MAR 14

21 SYSTEM OPERATION In the above example, the operator has called up menus of the selected systems : LAST or PREVIOUS LEG REPORT presents the list of Line-Replaceable Units (LRUs) affected by a failure. LRU IDENTIFICATION contains the part numbers of all LRUs in the system. GND SCANNING runs the flight monitoring on the ground and indicates the faulty LRU. CLASS 3 FAULTS lists class 3 faults detected by the system during the last flight leg. SYSTEM CONFIGURATION presents the system configuration in a digital form. 82U A318/A319/A320/A321 FLEET DSC P 9/14 FCOM F 06 MAR 14

22 SYSTEM OPERATION Note: These screens (except LAST or PREVIOUS LEG REPORT) are not shown above. Ident.: DSC / 09 DEC 09 GMT/DATE INITIALIZATION A CFDIU clock is synchronized with the cockpit clock in order to keep GMT (UTC) displayed on the ECAM lower display (except in flight Phases 1 and 2, if the weight and balance system is installed). If the cockpit clock fails, the CFDIU clock continues to display GMT (UTC) on the ECAM lower display. If electrical power is interrupted for more than 200 ms, the crew initializes GMT (UTC) and the DATE via the MCDU : Write GMT (UTC) in the scratchpad, then press the INIT GMT key. Do the same for the month and day. 82U A318/A319/A320/A321 FLEET DSC P 10/14 FCOM F to G 06 MAR 14

23 SYSTEM OPERATION 82U A318/A319/A320/A321 FLEET DSC P 11/14 FCOM G 06 MAR 14

24 SYSTEM OPERATION Ident.: DSC / 09 DEC 09 BACK UP MODE If the CFDIU's main channel fails, the backup channel allows the CFDS to operate in backup mode : on the ground only through MCDU1 in one mode of operation only : SYSTEM REPORT/TEST without the PRINTER or ACARS. The system changes over from main channel to backup channel : Automatically in case of an important failure (power supply, for example). In this case, when the operator selects CFDS on the MCDU MENU, it displays the BACKUP MODE page. Manually if the operator selects BACKUP MODE on the CFDS menu after a minor failure. 82U A318/A319/A320/A321 FLEET DSC P 12/14 FCOM H 06 MAR 14

25 SYSTEM OPERATION ACARS PRINT PROGRAM Ident.: DSC / 14 FEB 11 3 Applicable to: MSN 0189 This function gives access to reprogramming page. The programming is provided by the ACARS or manually (on the ground or in flight) : 82U A318/A319/A320/A321 FLEET DSC P 13/14 FCOM H to I 06 MAR 14

26 SYSTEM OPERATION Note: The CFDIU memorizes all manual programming so that at initialisation the last configuration will be retained. 82U A318/A319/A320/A321 FLEET DSC P 14/14 FCOM I 06 MAR 14

27 PRINTER Ident.: DSC / 09 DEC 09 GENERAL The printer prints reports from the following systems (if installed) : ACARS, AIDS, FMGC, CFDIU and EVMU. It prints these on paper, and does so either on the ground or in flight. The printer is installed at the rear of the pedestal on the right side. Ident.: DSC / 01 OCT 12 SYSTEM DESCRIPTION 82U A318/A319/A320/A321 FLEET DSC P 1/2 FCOM A to B 15 FEB 13

28 PRINTER (1) SLEW sw : The SLEW switch is used to feed paper after having loaded a new roll. (2) PRINTER DOOR LATCH : The printer door latch locks the door used for loading paper. 82U A318/A319/A320/A321 FLEET DSC P 2/2 FCOM B 15 FEB 13

29 ELECTRICAL SUPPLY BUS EQUIPMENT LIST Ident.: DSC / 09 DEC 09 CFDS AC NORM DC DC1 AC ESS EMER ELEC DC ESS HOT 82U A318/A319/A320/A321 FLEET DSC P 1/2 FCOM A 07 OCT 11

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