DOC AIRBUS | TSM A320FRHMLG/LHMLG Confirmed Disagree on EIU-1
TASK 73-25-00-810-A14-A
RHMLG/LHMLG Confirmed Disagree on EIU-1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 73-25-00-710-449-A ** ON A/C NOT FOR ALL
Subtask 73-25-00-810-277-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:36:27 UTC
RHMLG/LHMLG Confirmed Disagree on EIU-1
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 32-31-71-000-001 | Removal of the LGCIU |
| AMM 32-31-71-400-001 | Installation of the LGCIU |
| AMM 73-25-34-000-802 | Removal of the Engine Interface Unit (EIU) |
| AMM 73-25-34-400-802 | Installation of the Engine Interface Unit (EIU) |
| AMM 73-25-34-710-802 | Operational Test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS) |
Subtask 73-25-00-710-449-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. Fault IsolationSubtask 73-25-00-810-277-A ** ON A/C NOT FOR ALL
A. If there is confirmation of the fault:
(1) Replace LGCIU-1 [5GA1] and LGCIU-2 [5GA2] AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(a) Do the repair confirmation, refer to the Para. 4.B.
(2) If the fault continues:
(a) Replace EIU-1 [1KS1] AMM 73-25-34-000-802 and AMM 73-25-34-400-802.
(b) Do the repair confirmation, refer to the Para. 4.B.
Subtask 73-25-00-710-450-A ** ON A/C NOT FOR ALL (1) Replace LGCIU-1 [5GA1] and LGCIU-2 [5GA2] AMM 32-31-71-000-001 and AMM 32-31-71-400-001.
(a) Do the repair confirmation, refer to the Para. 4.B.
(2) If the fault continues:
(a) Replace EIU-1 [1KS1] AMM 73-25-34-000-802 and AMM 73-25-34-400-802.
(b) Do the repair confirmation, refer to the Para. 4.B.
B. Repair Confirmation
(2) If this disagreement was recorded in flight, check on Post Flight Report (PFR) of subsequent flight that this fault does not come back.
NOTE: This disagreement can be recorded on ground or in flight.
(1) If this disagreement was recorded on ground, do the operational test of the Engine Interface Unit (EIU) with the Centralized Fault Display System (CFDS) to confirm this fault AMM 73-25-34-710-802. (2) If this disagreement was recorded in flight, check on Post Flight Report (PFR) of subsequent flight that this fault does not come back.