(a) Shows a total fuel quantity that is not degraded, maintenance steps are not necessary.
(b) Shows degraded, do Para. 4.A. NOTE : The total fuel quantity, the fuel on board (FOB) shows
____ degraded if any tank/cell shows degraded.
A tank/cell will show degraded if the gauging error is within two and a half times the specified accuracy. This corresponds to Grade 3 as shown on the FQIS STATUS page.
**ON A/C 301-399,
B. Test
(1) If necessary, do the EIS Start Procedure (ECAM only) (Ref. AMM TASK 31-60-00-860-001).
(2) Do a check of the upper ECAM, ENGINE/WARNING DISPLAY to see if the FOB shows degraded.
NOTE : Degraded data is when the two least significant (last) digits
____ are set to zero with amber lines across.
(3) If the FOB:
(a) Shows a total fuel quantity that is not degraded, maintenance steps are not necessary.
(b) Shows degraded, do Para. 4.A. NOTE : The total fuel quantity, the fuel on board (FOB) shows
____ degraded if any tank shows degraded.
A tank will show degraded if the gauging error is within two and a half times the specified accuracy. This corresponds to Grade 3 as shown on the FQIS STATUS page.
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May 01/05 CES **ON A/C ALL
4. Fault Isolation
_______________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
A. Procedure
(1) On the ECAM CONTROL PANEL, push (in) the FUEL P/BSW.
(2) Examine the FUEL system page to see at which location(s) the tank/cells show degraded.
(a) Make a record of which tank/cell is degraded.
(3) If available, read the POST FLIGHT REPORT (PFR) to see if any FQIS, FAULT MESSAGES are shown.
(a) Make a record of all the FQIS, FAULT MESSAGES shown.
(4) Do the procedure to get access to the SYSTEM REPORT/TEST menu page (Ref. AMM TASK 31-32-00-860-001).
(5) When the SYSTEM REPORT/TEST menu page comes into view, push the line key adjacent to FUEL.
(6) When the FUEL menu page 1 comes into view, push the NEXT PAGE key on the MCDU keyboard to see the FUEL menu page 2.
NOTE : If a menu has more than one page (shown by the more to come
____ symbol > on the top line, right side of the MCDU display) each operation of the NEXT PAGE key on the MCDU keyboard will cause the next page to be shown. When the last page of any menu is shown, operation of the NEXT PAGE key will cause the first page to be shown.
(7) When the FUEL menu page 2 comes into view, push the line key adjacent to FQIS STATUS.
(8) Examine the FQIS STATUS page and make a record of all the FAULT MESSAGES shown.
NOTE : If necessary, use the MCDU PRINT option to get the record.
____
(9) Reset the FQIC as follows:
(a) Open the C/Bs 1QT and 2QT.
(b) Wait 5 seconds.
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Aug 01/05 CES
(c) Close the C/Bs 1QT and 2QT.
NOTE : For the FQIC to do a (new) power up BITE test, a power
____ supply interrupt (interval) of more than 5 seconds is necessary. This gives the current status of the FQIS components.
NOTE : The FUEL page FQIs will show XXs in amber color, for 35
____ seconds, during the FQIC power up BITE test. A FQIS sensor fault must be sensed by the FQIC for 60 seconds before the applicable LRU identification is transmitted to the CFDS as unserviceable. The fault message is shown on the MCDU when set to SYSTEM REPORT/TEST (FUEL) and the FQIS STATUS page.
(10) When the BITE test is complete (XX shown on the FQIs for 35 seconds and the display has no dashes for 60 seconds), examine the FQIS STATUS page (again) for FAULT MESSAGES shown.
(11) If, after the FQIC reset, any fault messages recorded in steps (3)(a) and (8) are not now shown, remove (erase/delete) them from the (your) record.
NOTE : Maintenance steps are not necessary for those fault messages
____ because they are considered spurious.
(12) Do a check of the upper ECAM, ENGINE/WARNING DISPLAY to see if the FOB is (has stayed) degraded.
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