Intercell XFR System - Both Valves Show XX, CFDS (FUEL) Reports All Valves
TASK 28-15-00-810-822-A
Intercell XFR System - Both Valves Show XX, CFDS (FUEL) Reports All Valves
A. Referenced Information
3. Fault Confirmation
Subtask 28-15-00-710-071-A ** ON A/C NOT FOR ALL
Subtask 28-15-00-810-071-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:28:31 UTC
Intercell XFR System - Both Valves Show XX, CFDS (FUEL) Reports All Valves
WARNING:
OBEY THE FUEL SAFETY PROCEDURES.
1. Possible CausesLeft Wing Forward Intercell XFR VALVE 27QM/70QM/9QP failure Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP failure Right Wing Forward Intercell XFR VALVE 29QM/72QM/10QP failure Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP failure
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 28-15-00-810-823-A | Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/FWD Valve |
| TSM TASK 28-15-00-810-824-A | Intercell XFR System - Left Valve Shows XX, CFDS (FUEL) Reports L/REAR Valve |
| TSM TASK 28-15-00-810-825-A | Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports R/FWD Valve |
| TSM TASK 28-15-00-810-826-A | Intercell XFR System - Right Valve Shows XX, CFDS (FUEL) Reports R/REAR Valve |
| AMM 28-46-00-740-001 | Functional (BITE) Test |
Subtask 28-15-00-710-071-A ** ON A/C NOT FOR ALL
A. Do the FLSS BITE test AMM 28-46-00-740-001.
4. Fault IsolationNOTE: If the aircraft is already supplied with electrical power, reset the FQIC. (Pull, then push C/Bs M27 on 121VU and A13 on 49VU). The FLSS BITE test is carried out once a short time after power up. After a two minute delay to allow the FQIC to do the BITE test, continue.
NOTE: The intercell transfer valves (ICTVs) are motor driven and the power for these circuits is derived from the main power. The ICTVs are immobilized on battery power.
Subtask 28-15-00-810-071-A ** ON A/C NOT FOR ALL
A. Read:
- the FQIS STATUS Page, CFDS (FUEL) - 06 FQIC Software Standard
- the FLSS STATUS Page, CFDS (FUEL) - 07 FQIC Software Standard.
- (Ref. TSM TASK 28-15-00-810-823) for the
Left Wing Forward Intercell XFR VALVE 27QM/70QM/9QP failure - (Ref. TSM TASK 28-15-00-810-824) for the
Left Wing Rear Intercell XFR VALVE 28QM/71QM/11QP failure - (Ref. TSM TASK 28-15-00-810-825) for the
Right Wing Forward Intercell XFR VALVE 29QM/72QM/10QP failure - (Ref. TSM TASK 28-15-00-810-826) for the
Right Wing Rear Intercell XFR VALVE 30QM/73QM/12QP failure .