DOC AIRBUS | TSM A320FAPU AUTO SHUT DOWN - UNDERSPEED, Fuel Control Unit Fault (APS 3200)
TASK 49-00-00-810-883-A
APU AUTO SHUT DOWN - UNDERSPEED, Fuel Control Unit Fault (APS 3200)
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 49-00-00-710-214-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 49-00-00-810-134-C ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:34:23 UTC
APU AUTO SHUT DOWN - UNDERSPEED, Fuel Control Unit Fault (APS 3200)
1. Possible Causes
SPEED SENSORS (8060KM1) and/or (8060KM2) - MAGNETIC DRAIN PLUG
- wiring
FUEL CONTROL UNIT (8022KM) - ELECTRONIC CONTROL BOX [59KD]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ESPM 205221 | |
| ESPM 205321 | |
| AMM 49-00-00-710-008 | Operational Test of the APU |
| AMM 49-32-11-000-002 | Removal of the Fuel Control Unit (APS 3200) |
| AMM 49-32-11-400-002 | Installation of the Fuel Control Unit (APS 3200) |
| ASM 496102 | |
| AMM 49-61-34-000-002 | Removal of the Electronic Control Box (ECB) (APS 3200) |
| AMM 49-61-34-400-002 | Installation of the Electronic Control Box (ECB) (APS 3200) |
| AMM 49-71-13-000-002 | Removal of the Speed Sensor (APS 3200) |
| AMM 49-71-13-400-002 | Installation of the Speed Sensor (APS 3200) |
| AMM 49-91-42-200-003 | Inspection of the Magnetic Drain Plug (APS 3200) |
Subtask 49-00-00-710-214-B ** ON A/C NOT FOR ALL 4. Fault Isolation
Subtask 49-00-00-810-134-C ** ON A/C NOT FOR ALL
A. Maintenance Action
(1) If the APU Last Leg Report gives the maintenance message:
FUEL CTL UNIT (8022KM):
Fault Code Number: 067
Additionally:
Fault Code Number(s):
029 or 092 or 093
and/or
032 or 094 or 095
FUEL CTL UNIT (8022KM):
Fault Code Number: 067
Subtask 49-00-00-710-215-A ** ON A/C NOT FOR ALL (1) If the APU Last Leg Report gives the maintenance message:
FUEL CTL UNIT (8022KM):
Fault Code Number: 067
NOTE: The APU SHUTDOWNS report gives the maintenance message:
UNDERSPEED - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 067
UNDERSPEED - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 067
Additionally:
Fault Code Number(s):
029 or 092 or 093
and/or
032 or 094 or 095
NOTE: FCN 027-032 and 092-095 on Class 3 Faults Page.
- replace the
SPEED SENSORS (8060KM1) and/or (8060KM2) AMM 49-71-13-000-002 and AMM 49-71-13-400-002.
FUEL CTL UNIT (8022KM):
Fault Code Number: 067
NOTE: The APU SHUTDOWNS report gives the maintenance message:
UNDERSPEED - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 067
UNDERSPEED - FUEL CTL UNIT (8022KM)
APU Auto Shut Down Fault Code Number: 067
- do a check for blockage of the air inlet.
- do a check for contamination of the MAGNETIC DRAIN PLUG AMM 49-91-42-200-003.
- do a check and repair the wiring from the ECB (59KD) AB/F11, H10, H11, J3 to the FUEL CONTROL UNIT (8022KM) P19/1, 3, 4, 2 ASM 496102 ESPM 205221 ESPM 205321.
- replace the
FUEL CONTROL UNIT (8022KM) AMM 49-32-11-000-002 and AMM 49-32-11-400-002.
- replace the ELECTRONIC CONTROL BOX [59KD] AMM 49-61-34-000-002 and AMM 49-61-34-400-002.
B. Do the test given in Para. 3.