W DOC AIRBUS | AMM A320F

Sample Fuel for Volcanic-Ash Contamination Analysis

TASK 12-32-28-281-803-A
Sample Fuel for Volcanic-Ash Contamination Analysis

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
ZONE: 190
ZONE: 500
ZONE: 600
1. Reason for the Job
NOTE: This task can be done together with TASK 12-32-28-281-001 (Drain Water Content) TASK 12-32-28-281-003 (Sample Fuel for Microbiological Contamination Analysis).
NOTE: AIRBUS recommends that there must be more than 10% content of fuel in each tank. This is necessary to cover the water drain valve outlet, so that the water drain valves can operate satisfactorily.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
CONTAINER - CLEAN, APPLICABLE
No specific
AR
SAFETY BARRIER(S)
No specific
AR
WARNING NOTICE(S)
No specific
AR
WATER - DISTILLED
98A28101000000
1
ADAPTING PIPE - WATER DRAINING FROM FUEL
98A28104000000
1
PURGER - WATER DRAIN
98D28104000000
1
PIPE ADAPTING-WATER DRAINING
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BBD1)
Non Aqueous Cleaner-- Isopropyl Alcohol -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
190
BELLY FAIR, AIR CONDITIONING & HYD COMPT
500
LEFT WING
600
RIGHT WING
195BB, 196BB
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 12-31-28-660-001-A
Cold Weather Maintenance - Fuel
TASK 28-00-00-910-001-A
Fuel Safety Procedures
TASK 28-12-47-200-001-A
Visual Check of NACA Intake for Signs of Blockage
TASK 28-21-00-710-007-A
Operational Test of the Main Fuel-Pump System with Fuel Flow by Transfer
TASK 28-24-00-710-002-A
Operational Test of the ENG 1(2) LP Fuel Valve
F Fuel Sampling for Analysis ** ON A/C NOT FOR ALL
F Fuel Sampling for Analysis ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 12-32-28-941-059-A
A. Safety Precautions
WARNING: OBEY THE FUEL SAFETY PROCEDURES.
   (1) You must obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001) when you do work on the fuel system.
   (2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
   (3) On the panel 400VU:
  • Make sure that the landing-gear control-lever 6GA is in the DOWN position
  • Put a warning notice in position to tell persons not to operate the landing gear.
   (4) Put a WARNING NOTICE(S) in position to tell the person not to operate the landing gear doors.
   (5) If the fuel temperature is less than 0 DEG.C (32.00 DEG.F) and/or the water drain valves are frozen, to keep the flight turnaround time either:
  • Do the cold weather maintenance procedure to warm the water drain valve (Ref. AMM TASK 12-31-28-660-001)
    or
  • Remove the fuel samples 30 minutes after the refuel procedure.
NOTE: Removal of the fuel samples after 30 minutes will not remove the water content as satisfactorily as samples removed one hour after the refuel procedure.
  • Do not apply too much force to open the water drain valve.
   (6) If the APU is in operation during this procedure, you must make sure the fuel tank pumps are set to OFF.
Subtask 12-32-28-010-078-A
B. Get Access
   (1) For access to the center-tank water-drain valves, open the applicable access panels:
  • For water drain valve 94QM, open 195BB
  • For water drain valve 95QM, open 196BB.
Subtask 12-32-28-110-055-A
C. Cleaning
   (1) Mix a solution of 1 part of WATER - DISTILLED to 3-4 parts of Non Aqueous Cleaner-- Isopropyl Alcohol - (Material No.08BBD1) in a CONTAINER - CLEAN, APPLICABLE.
   (2) Clean the applicable drain tool and the CONTAINER-FUEL RESISTANT, TRANSPARENT PLASTIC with the solution.
NOTE: If you use a CONTAINER-CLEAN, STERILIZED, TRANSPARENT GLASS, cleaning of the CONTAINER-CLEAN, STERILIZED, TRANSPARENT GLASS with the solution is not necessary.
   (3) Make sure that the applicable drain tool and the CONTAINER-FUEL RESISTANT, TRANSPARENT PLASTIC are fully dry before you use them.
Subtask 12-32-28-480-056-A
D. Preparation of the Equipment
   (1) If it is necessary to get access to the high water-drain valves from the ground, attach the:
4. Procedure
Subtask 12-32-28-281-066-A
A. Sample Fuel for Volcanic-Ash Contamination Analysis for Wing Tanks and Center Tank
   (1) Do a visual check of the NACA intakes for signs of blockage (Ref. AMM TASK 28-12-47-200-001).
   (2) For the wing and center-tank water-drain valves:
CAUTION: MAKE SURE THAT THE PLUNGER OF THE TOOL ALIGNS CORRECTLY WITH THE WATER DRAIN VALVE. INCORRECT ALIGNMENT OF THE TOOL CAN CAUSE:
  • THE WATER DRAIN VALVE TO STAY IN THE OPEN POSITION AFTER THE TOOL IS REMOVED
  • A FUEL LEAK.
     (a) Push the center of the applicable water drain valve with the 98A28104000000 PURGER - WATER DRAIN and drain approximately 1.0 l (0.26 USgal) of fuel from the water drain valve.
NOTE: A rubber shield prevents fuel leakage.
     (b) Remove the 98A28104000002 TOOL - PURGING from the water-drain valve.
   (3) Examine the applicable water drain valve for leakage. Leaks are not permitted.
NOTE: This step is very important at the center-tank water-drain valves 94QM and 95QM, where access is not easy.
   (4) Identify each sample with a label that shows:
  • The aircraft number
  • The time and the date of the sample
  • The source of the sample (which fuel tank and drain)
  • All additives that you know about.
   (5) Do the steps that follow for all of the tank samples (Refer to the ASTM standard D4176-04 test (Standard Method for Free Water Particulate Contamination in Distillate Fuels)):
     (a) After the test samples are collected, hold the samples up to the light. Usually, uncontaminated fuel is visually bright and clear.
     (b) You must wait for 15 minutes to identify if there are any visual signs of particles. If you find the fuel color is dark or there are any visual signs of particles, you must clean all of the fuel tanks.
Subtask 12-32-28-710-050-A
B. Operational Test
   (1) Do an operational test of the main fuel-pump system with fuel flow by transfer (Ref. AMM TASK 28-21-00-710-007).
   (2) Do an operational test of the LH(RH) LP Valve (Ref. AMM TASK 28-24-00-710-002).
5. Close-up
Subtask 12-32-28-410-073-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the applicable access panels:
  • For water drain valve 94QM, close 195BB
  • For water drain valve 95QM, close 196BB.
Subtask 12-32-28-942-058-A
B. Removal of Equipment
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the safety barriers.
   (3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
[Rev.10 from 2021] 2026.04.01 04:08:59 UTC
"Aviabrain" 2025