Document ID: chunk:federal_register_of_legislation:F2005L01740:body:0:p2
Version: federal_register_of_legislation:F2005L01740
Segment Type: other
Provision Reference: 
Character Range: 3073–6064

K7/486 (MOD 49193)
       LOSS OF ALL DISPLAY UNITS

       This Temporary Revision gives the procedure to be followed in case of loss of all Display Units (DU).

       Autopilot, autothrust and MCDU navigation data are still available and may be used.
       Monitor the flight by using standby instruments.

       Wait at least 40 seconds for automatic DU recovery.
       • If one or more DU is not automatically recovered after 40 seconds:
        Set the non-recovered DUs to OFF.
        After 40 seconds, sequentially switch them back to ON.

   • If all DUs are lost again when switching a given DU back to ON:
    Set all the DUs to OFF.
            After 40 seconds, switch them back to ON except the given DU which must be left permanently OFF.
       Aircraft equipped with FWC STD K7/486 (MOD 49193)
       LOSS OF ALL DISPLAY UNITS

       This Temporary Revision gives the procedure to be followed in case of loss of all Display Units (DU).

       Autopilot, autothrust and MCDU navigation data are still available and may be used.
       Monitor the flight by using standby instruments.

       Wait at least 40 seconds for automatic DU recovery.
        • If one or more DU is not automatically recovered after 40 seconds:
         Set the non-recovered DUs to OFF.
         After 40 seconds, sequentially switch them back to ON.

       • If all DUs are lost again when switching a given DU back to ON:
         Set all the DUs to OFF.
         After 40 seconds, switch them back to ON except the given DU which   must be left permanently OFF.

                 • If one or more ECAM DU must remain OFF:
                   • If ECAM DUAL DU reconfiguration is possible:
                    Set the ECAM/ND selector to CAPT or F/O.
                   • If ECAM DUAL DU reconfiguration is not possible or if the possible   DU configuration is not appropriate for  the type of approach:
                    Both FWC will be lost during approach so monitor systems on                 overhead panel.
                  Note:  ECAM cautions and warnings, aural warnings, master caution, warning lights, auto callouts and altitude alerts are lost during approach.
                  Only CAT I approach is allowed."
             Incorporation of Aircraft Flight Manual (AFM) Temporary Revision TR 4.02.00/23, TR 4.02.00/24 or a copy of this Directive in the Aircraft Operations Manual is a satisfactory method of compliance with this Requirement.
             Note:  DGAC AD F-2004-117 R1 (EASA Approval 2005-4752) refers.
Compliance:  For Requirements 1 and 2 - Remains unchanged as "After 4 August 2004".
             This Amendment becomes effective on 4 August 2005.
Background:  The Direction Générale de l'Aviation Civile of France has advised that an A320 operator reported the erratic behavior of all EIS2 LCD DUs in cruise for duration of three minutes with a total loss LCD DUs for 30 seconds.  As a precaution the pilot disconnected the autopilot and standby