Visual Inspection of the Fuel Filter Element [IAE]

TASK 73-12-42-200-010-B
Visual Inspection of the Fuel Filter Element

1. Reason for the Job
This task gives the procedure for the visual inspection of the fuel filter element. You must also do this visual inspection after each removal of the fuel filter element related to an ECAM warning "Fuel Filter Clog" or when you find contamination at the bottom of the fuel filter cover during any replacement of the fuel filter, whatever the reason.
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 72-00-00-200-013-B	Borescope Inspection of inside of Combustion Chamber and HP turbine stage 1 Vanes
TASK 72-00-00-200-014-B	Borescope Inspection of the Stage 1 High Pressure Turbine (HPT) Blades and Duct Segments
TASK 72-00-00-200-014-B-01	Borescope Inspection of the Stage 1 High Pressure Turbine (HPT) Blades and Duct Segments
TASK 72-00-00-200-015-B	Borescope Inspection of the Stage 2 High Pressure Turbine (HPT) Blades and Duct Segments
TASK 73-12-42-400-010-B	Installation of the Fuel Filter Element

3. Job Set-up
Subtask 73-12-42-020-057-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 73-12-42-210-061-A ** ON A/C NOT FOR ALL

A. Identification of Various Types of Contamination
(1) Contamination by solids in small amounts (dirt, sand, metallic particles or sealant particles):

NOTE: This can be considered as normal contamination of the engine mainfuel filter.

(a) Install Fuel Filter Element (Ref. AMM TASK 73-12-42-400-010).
(2) Contamination by solid in large amounts such as dirt, sand, metallic particles or sealant particles (No visible bronze particles).

NOTE: Possible causes are contaminated fuel, contaminated aircraft fuel tank(s), damaged aircraft boost pump, foreign material etc.

(a) Install Fuel Filter Element (Ref. AMM TASK 73-12-42-400-010).
(b) Do a check of the fuel filter element on the opposite engine.
(c) Do a check of the aircraft fuel tanks and clean them.
(3) Contamination by black sludge or slimy materials.

NOTE: This contamination can be due to fungus growth.

(a) Install Fuel Filter Element (Ref. AMM TASK 73-12-42-400-010).
(b) Do a check of the fuel filter element on the opposite engine.
(c) Do a check of the aircraft fuel tanks and clean them. Flush the fuel lines and do a biocidal shock treatment.
(4) Contamination by bronze particles.

NOTE: Bronze particles are a sign of engine damage, specifically a failure of the LP/HP Fuel Pump. If you do not do maintenance, more damage will occur to the engine. It will then be necessary to replace the fuel system components.

(a) Do a check of the fuel system for contamination.
(b) Do a check of the fuel filter element on the opposite engine.
(c) Do a check of the aircraft fuel tanks and clean them.

NOTE: This kind of contamination can potentially or totally block the fuel nozzle. The following inspections should be carried out. Details of appropriate action referring to engine or part removal are provided in the following tasks.

(d) Do an inspection of the Combustion Chamber and HPT First Stage Vanes (Ref. AMM TASK 72-00-00-200-013).
(e) Do an inspection of the Stage 1 HPT Blades (Ref. AMM TASK 72-00-00-200-014).
(f) Do an inspection of the Stage 2 HPT Blades (Ref. AMM TASK 72-00-00-200-015).

[Rev.10 from 2021] 2026.04.01 03:00:23 UTC