Fuel Overtemperature on Engine 1

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1. Possible Causes
· FCOC ( 6003EM )
· IDG ( 4000XU )
· fuel cooled IDG oil cooler
· EEC ( 4000KS )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 24-21-42-000-010 Removal of the Fuel-Cooled IDG Oil-Cooler
Ref. AMM 24-21-42-400-010 Installation of the Fuel-Cooled IDG Oil-Cooler
Ref. AMM 24-21-51-000-040 Removal of the Integrated Drive Generator - IDG 1(2)
Ref. AMM 24-21-51-400-040 Installation of the Integrated Drive Generator - IDG 1(2)
Ref. AMM 73-22-34-000-010 Removal of the Electronic Engine Control (EEC)
Ref. AMM 73-22-34-400-010 Installation of the Electronic Engine Control (EEC)
Ref. AMM 79-21-43-000-010 Removal of the Fuel Cooled Oil Cooler
Ref. AMM 79-21-43-400-010 Installation of the Fuel Cooled Oil Cooler
3. Fault Confirmation
Subtask 73-00-00-710-054-A
A. Test
Not applicable, the fault may not be evident on the ground.
4. Fault Isolation
Subtask 73-00-00-810-052-A
A. If the fault symptom is identified by the CFDS message HMS-FUEL OVTMP 1 and the ECAM warning
ENG 1 FADEC:
· replace the FCOC ( 6003EM ) Ref. AMM 79-21-43-000-010 and Ref. AMM 79-21-43-400-010 .
(1) If the fault continues:
· replace the IDG ( 4000XU ) Ref. AMM 24-21-51-000-040 and Ref. AMM 24-21-51-400-040 .
(2) If the fault continues:
· replace the fuel cooled IDG oil cooler Ref. AMM 24-21-42-000-010 and Ref.
AMM 24-21-42-400-010 .
(3) If the fault continues:
· replace the EEC ( 4000KS ) Ref. AMM 73-22-34-000-010 and Ref. AMM 73-22-34-400-010 .
Subtask 73-00-00-710-055-A
B. After the subsequent flight, make sure that the fault does not continue. [Rev.6 from Feb 2017] 2026.04.04 04:36:03 UTC