DOC AIRBUS | TSM A320FSpurious ECAM Warnings 'FUEL L(R) WING TK OVERFLOW' Reported When The Related Systems Are Not Installed
TASK 28-11-00-810-807-A
Spurious ECAM Warnings 'FUEL L(R) WING TK OVERFLOW' Reported When The Related Systems Are Not Installed
A. Referenced Information
3. Fault Confirmation
Subtask 28-11-00-710-057-A ** ON A/C NOT FOR ALL
Subtask 28-11-00-810-056-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:28:26 UTC
Spurious ECAM Warnings 'FUEL L(R) WING TK OVERFLOW' Reported When The Related Systems Are Not Installed
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
1. Possible Causes- SDAC
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 31-55-00-810-801-A | Unwanted (Spurious) Warnings/Indications involving the SDAC |
Subtask 28-11-00-710-057-A ** ON A/C NOT FOR ALL
A. Test (Not Applicable)
General Background Data
In the Flight Warning Computer (FWC) standards H1E2, H2E2 (or earlier) the related logic diagrams for the ECAM FUEL warnings that follow do not include an A321 logic input:
With the introduction of Flight Warning Computer (FWC) standards H1E3, H2E3 or later, the same logic diagrams (as referred to above) were given a A321 logic input.
The related single aisle aircraft TSM Tasks are 28-26-00-810-808 and 28-26-00-810-809.
4. Fault IsolationGeneral Background Data
In the Flight Warning Computer (FWC) standards H1E2, H2E2 (or earlier) the related logic diagrams for the ECAM FUEL warnings that follow do not include an A321 logic input:
- FUEL-LEFT WING TANK OVERFLOW -A321 (See LOGIC IDENT 1.28.582)
- FUEL-RIGHT WING TANK OVERFLOW -A321 (See LOGIC IDENT 1.28.584).
NOTE: The applicable logic diagrams can be found in the ECAM SYSTEM LOGIC BOOKs (ECLB).
Thus it is possible that a failure in a SDAC can trigger a (spurious) ECAM warning for an item of equipment, or system, that is not installed in that standard (type) of single aisle aircraft (Ref. OEB 148-2). With the introduction of Flight Warning Computer (FWC) standards H1E3, H2E3 or later, the same logic diagrams (as referred to above) were given a A321 logic input.
NOTE: The revised logic diagrams can be found in the ECAM System Logic Data (ESLD) (available at Airbus Online Services (AOLS) or Compact Disc (CD)).
The same failure in a SDAC will not now trigger a (spurious) ECAM warning for the logic indentifications referred to above/before. The related single aisle aircraft TSM Tasks are 28-26-00-810-808 and 28-26-00-810-809.
Subtask 28-11-00-810-056-A ** ON A/C NOT FOR ALL
A. Procedure
(1) Do the TSM procedure 'Unwanted (Spurious) Warnings/Indications involving the SDAC ' (Ref. TSM TASK 31-55-00-810-801).
(1) Do the TSM procedure 'Unwanted (Spurious) Warnings/Indications involving the SDAC ' (Ref. TSM TASK 31-55-00-810-801).
NOTE: If available read FWC Spurious Faults or Invalid Pin Program Configuration (Ref. OEB 148-2).