Loss of the Cooling Air System

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1. Possible Causes
· EEC ( 4000KS )
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
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 75-21-00-200-010 Check Zone 1 Ventilation Inlet and Exit for Blockage
3. Fault Confirmation
Subtask 75-00-00-710-050-A
A. Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
Subtask 75-00-00-810-050-A
A. If the fault symptom is identified by the CFDS message EEC COOLING AIR/EEC1:
· Do a general check of the nacelle compartment and Accessory Cooling Ref. AMM 75-21-00-200-010 .
(1) if the fault continues:
· replace the EEC ( 4000KS ) Ref. AMM 73-22-34-000-010 and Ref. AMM 73-22-34-400-010
Subtask 75-00-00-710-051-A
B. After the subsequent flight, make sure that the fault does not continue. [Rev.6 from Feb 2017] 2026.04.04 04:37:13 UTC