W DOC AIRBUS | AMM A320F

Preservation of the Aircraft from a Sand/Dust Storm or Volcanic Ash Conditions on the Ground

TASK 10-11-00-553-801-A
Preservation of the Aircraft from a Sand/Dust Storm or Volcanic Ash Conditions on the Ground

WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING: BEFORE YOU DO WORK ON OR NEAR THE ENGINES, PUT A WARNING NOTICE IN THE COCKPIT. THIS WARNING NOTICE MUST TELL PERSONS NOT TO START THE ENGINES DURING THE PROCEDURE. IF THE ENGINES START WHILE YOU ARE NEAR THEM, THE SUCTION CAN PULL YOU INTO OR AGAINST THE AIR INTAKE. THIS CAN KILL YOU OR CAUSE INJURY TO YOU.
WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING: BEFORE YOU START WORK, YOU MUST PUT ON A SAFETY HARNESS AND ATTACH IT TO THE ACCESS PLATFORM. WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.
CAUTION: BEFORE YOU DO WORK ON AN EXTERNAL SURFACE OF THE AIRCRAFT, MAKE SURE THAT THIS SURFACE HAS A CORRECT PROTECTION. IF THE PROTECTION IS NOT CORRECT, YOU CAN CAUSE DAMAGE TO THE SURFACE.
1. Reason for the Job
Airbus recommends that you park the aircraft in a hangar or a different airport where the sand/dust storm or volcanic ash conditions do not occur.
If you cannot park the aircraft in a hangar or a different airport, this procedure gives the instructions to protect the aircraft on the ground from a sand/dust storm or volcanic ash condition.
You must do this procedure before the start of the sand/dust storm or volcanic ash conditions.
You must remove the protection as soon as possible after the sand/dust storm or volcanic ash condition.
Primary protection:
Systems and areas that you must protect first. Airbus recommends that you install the primary protection first.
Secondary protection:
Airbus recommends that you install the secondary protection if you have sufficient time.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific
AR
CHOCK - WHEEL(S)
No specific
AR
FILM - POLYETHYLENE
No specific
AR
TAPE - ADHESIVE
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
550AB, 550CB, 650AB, 650CB
540PB, 640PB
540HB, 640HB
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 05-57-00-200-001-A
Aircraft Stability
TASK 05-57-00-200-001-B
Aircraft Stability
TASK 05-57-00-200-001-C
Aircraft Stability
TASK 10-11-00-555-013-A
Installation of the Aircraft Protection Equipment
TASK 10-11-00-555-015-A
Procedure for the Installation of Wheel Chocks on Aircraft
TASK 10-20-00-556-001-A
Mooring of Aircraft without Weight and Balance Provision on the Landing Gear Legs
TASK 10-20-00-556-001-A-01
Mooring of Aircraft with Weight and Balance Provision on the Landing Gear Legs
TASK 12-34-24-869-002-A
Aircraft Grounding (Earthing) for the Maintenance Operations
TASK 12-34-24-869-002-A-01
Aircraft Grounding (Earthing) during Transit, Turnaround or Overnight Stop
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
F Protection Covers/Devices on the Probes and Sensors
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
3. Job Set-up
Subtask 10-11-00-210-068-A
A. General
NOTE: Definition of a sand/dust storm:
A sand/dust storm is an unusual condition in which strong winds blow large quantities of sand/dust into the air. A sand/dust storm goes on large areas and decreases visibility very much.
NOTE: Definition of volcanic ash:
Volcanic ash is small particles of rock powder that are blown out of a volcano. These particles can go into the atmosphere to aircraft flight levels. They can move thousands of miles and stay in the atmosphere for long periods.
Many events show that the engine and/or APU operation in a volcanic ash environment can cause important damage to the engine and/or APU.
   (1) The sand/dust and volcanic ash particles can be of different sizes, they can enter all openings and can go through many seals.
   (2) The sand/dust and volcanic ash can stay:
  • On all exposed lubricated surfaces
  • In all corners
  • In bottom positions.
The sand/dust and volcanic ash can cause contamination on all filter elements.
   (3) The texture of volcanic ash is almost the same as talcum powder.
   (4) Volcanic ash is hard, very abrasive and acid (pH between 2 and neutral).
   (5) Sand/dust and ash can cause erosion/abrasion, etching or shot-peening on the surfaces and can remove the finish/protection and thus cause damage/corrosion.
Subtask 10-11-00-941-062-A
B. Safety Precautions
   (1) Before you install the protection covers/devices, make sure that the probes/sensors, the engines and the APU are cool.
   (2) Put the WARNING NOTICE(S) in the cockpit to tell persons not to operate the systems where you will install the protection covers/devices.
Subtask 10-11-00-860-095-A
C. Aircraft Maintenance Configuration
   (1) If possible, park the aircraft with the nose into the wind.
   (2) Make sure that the aircraft is stable (Ref. AMM TASK 05-57-00-200-001).
   (3) If necessary, moor the aircraft (Ref. AMM TASK 10-20-00-556-001).
   (4) Put the CHOCK - WHEEL(S) in position (Ref. AMM TASK 10-11-00-555-015).
   (5) Electrically ground the aircraft (Ref. AMM TASK 12-34-24-869-002).
   (6) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
   (7) Make sure that the slats, the flaps, the spoilers and the ailerons are retracted and that the thrust reversers are stowed.
WARNING: BEFORE YOU PUSH THE DITCHING PUSHBUTTON SWITCH, MAKE SURE THAT THERE IS NO SUPPLY OF AIR TO THE AIRCRAFT THROUGH THE LOW PRESSURE CONNECTION. IF THERE IS A SUPPLY OF AIR, YOU CAN CAUSE UNWANTED PRESSURIZATION OF THE AIRCRAFT. THIS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.
   (8) On the CABIN PRESS section of panel 25VU:
  • Lift the guard and push the DITCHING pushbutton switch (the ON legend comes on) to close the avionics ventilation overboard-valves and the outflow valves.
   (9) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (10) Make sure that all the aircraft openings are closed:
  • The sliding windows
  • The passenger/crew doors
  • The emergency exits
  • The landing gear doors
  • The cargo compartment doors
  • All the service panels and access doors.
   (11) Aircraft protection
     (a) Precautions related to the TAPE - ADHESIVE
       1 Use the TAPE - ADHESIVE only in the specified areas.
       2 Use the TAPE - ADHESIVE that:
  • Does not make adhesive marks on the aircraft skin
  • Has a color that is different to the color of the area on the aircraft (easy to see).
       3 Record the locations where you put the TAPE - ADHESIVE and the FILM - POLYETHYLENE.
Subtask 10-11-00-010-056-A
D. Get Access
   (1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position near the aircraft.
4. Procedure
Subtask 10-11-00-555-084-A ** ON A/C NOT FOR ALL
A. Primary Protection
F Protection Covers/Devices on the Probes and Sensors ** ON A/C NOT FOR ALL
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
WARNING: DO NOT APPLY ADHESIVE TAPE ON THE PROBES, DUCTS, SENSORS (STATIC, PITOT, TAT, AOA). USE ONLY THE SPECIFIED TOOLS FOR THE PROTECTION OF THE AIRCRAFT. THE SPECIFIED TOOLS:
  • GIVE THE CORRECT PROTECTION TO THE AIRCRAFT EQUIPMENT,
  • ARE EASY TO SEE FROM THE GROUND,
  • ARE EASY TO REMOVE.
IF YOU USE TAPE, THERE IS A RISK THAT SOME TAPE, OR ADHESIVE FROM THE TAPE, WILL STAY ON THE PROBES, DUCTS OR SENSORS. THIS CAN CAUSE INCORRECT INDICATIONS ON THE RELATED COCKPIT INSTRUMENTS.
   (1) Install the protection covers/devices (Ref. AMM TASK 10-11-00-555-013).
   (2) After installation of the protection covers/devices on:
     (a) The Angle Of Attack (AOA) sensors:
       1 Apply the FILM - POLYETHYLENE (diamond shape (length 600 mm (23.62 in.) and width 600 mm (23.62 in.))) on the protection covers/devices on the AOA sensors.
       2 Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides. Make sure that:
  • The FILM - POLYETHYLENE is not too tight on the protection covers/devices on the sensors.
  • The FILM - POLYETHYLENE is on all the parts of the protection cover/device of each sensor.
       3 Record the locations where you apply the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (b) The other probes/sensors (static probes, pitot probes, ice detectors (if installed) and Total Air Temperature (TAT) sensors):
       1 Apply the FILM - POLYETHYLENE (square shape (length 600 mm (23.62 in.) and width 600 mm (23.62 in.))) on the protection covers/devices on the probes/sensors.
NOTE: You can apply the FILM - POLYETHYLENE in a rectangular shape for the probes/sensors that are near each other.
       2 Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides. Make sure that:
  • The FILM - POLYETHYLENE is not too tight on the protection covers/devices on the probes/sensors.
  • The FILM - POLYETHYLENE is on all the parts of the protection cover/device of each probe/sensor.
       3 Record the locations where you apply the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (c) The engines:
  • Put the TAPE - ADHESIVE on the engine protection covers/devices for better sealing.
  • Use the FILM - POLYETHYLENE and the TAPE - ADHESIVE to seal all the inlets and outlets of the engines (this includes the drain mast).
  • Use the TAPE - ADHESIVE to seal the access door edges of the nacelles.
  • Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (d) The APU:
  • Put the TAPE - ADHESIVE on the protection covers/devices on the intake and exhaust of the APU for better sealing.
  • Record the locations where you put the TAPE - ADHESIVE.
   (3) Use the FILM - POLYETHYLENE and the TAPE - ADHESIVE to seal the grids on the access panel of the bleed air precooler-exchanger on each pylon.
   (4) Protect the wings as follows:
     (a) Apply the FILM - POLYETHYLENE on:
  • The NACA vent intakes (below the wing tanks on access panels 550AB and 650AB.
  • The wing tank overpressure-protectors (below the wing tanks on access panels 550CB ( 650CB) and 540HB ( 640HB)).
     (b) Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides.
     (c) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
   (5) Protect the fuselage as follows:
     (a) Apply the FILM - POLYETHYLENE on the ram air inlets.
     (b) Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides.
     (c) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
Subtask 10-11-00-555-084-D ** ON A/C NOT FOR ALL
A. Primary Protection
F Protection Covers/Devices on the Probes and Sensors ** ON A/C NOT FOR ALL
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
F Primary Protection on the Engines ** ON A/C NOT FOR ALL
WARNING: DO NOT APPLY ADHESIVE TAPE ON THE PROBES, DUCTS, SENSORS (STATIC, PITOT, TAT, AOA). USE ONLY THE SPECIFIED TOOLS FOR THE PROTECTION OF THE AIRCRAFT. THE SPECIFIED TOOLS:
  • GIVE THE CORRECT PROTECTION TO THE AIRCRAFT EQUIPMENT,
  • ARE EASY TO SEE FROM THE GROUND,
  • ARE EASY TO REMOVE.
IF YOU USE TAPE, THERE IS A RISK THAT SOME TAPE, OR ADHESIVE FROM THE TAPE, WILL STAY ON THE PROBES, DUCTS OR SENSORS. THIS CAN CAUSE INCORRECT INDICATIONS ON THE RELATED COCKPIT INSTRUMENTS.
   (1) Install the protection covers/devices (Ref. AMM TASK 10-11-00-555-013).
   (2) After installation of the protection covers/devices on:
     (a) The Angle Of Attack (AOA) sensors:
       1 Apply the FILM - POLYETHYLENE (diamond shape (length 600 mm (23.62 in.) and width 600 mm (23.62 in.))) on the protection covers/devices on the AOA sensors.
       2 Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides. Make sure that:
  • The FILM - POLYETHYLENE is not too tight on the protection covers/devices on the sensors.
  • The FILM - POLYETHYLENE is on all the parts of the protection cover/device of each sensor.
       3 Record the locations where you apply the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (b) The other probes/sensors (static probes, pitot probes, ice detectors (if installed) and Total Air Temperature (TAT) sensors):
       1 Apply the FILM - POLYETHYLENE (square shape (length 600 mm (23.62 in.) and width 600 mm (23.62 in.))) on the protection covers/devices on the probes/sensors.
NOTE: You can apply the FILM - POLYETHYLENE in a rectangular shape for the probes/sensors that are near each other.
       2 Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides. Make sure that:
  • The FILM - POLYETHYLENE is not too tight on the protection covers/devices on the probes/sensors.
  • The FILM - POLYETHYLENE is on all the parts of the protection cover/device of each probe/sensor.
       3 Record the locations where you apply the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (c) The engines:
  • Put the TAPE - ADHESIVE on the engine protection covers/devices for better sealing.
  • Use the FILM - POLYETHYLENE and the TAPE - ADHESIVE to seal all the inlets and outlets of the engines (this includes the drain mast).
  • Use the TAPE - ADHESIVE to seal the access door edges of the nacelles.
  • Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
     (d) The APU:
  • Put the TAPE - ADHESIVE on the protection covers/devices on the intake and exhaust of the APU for better sealing.
  • Record the locations where you put the TAPE - ADHESIVE.
   (3) Use the FILM - POLYETHYLENE and the TAPE - ADHESIVE to seal the grids on the access panel of the bleed air precooler-exchanger on each pylon.
   (4) Protect the wings as follows:
     (a) Apply the FILM - POLYETHYLENE on:
  • The NACA vent intakes (below the wing tanks on access panels 550AB and 650AB.
  • The wing tank overpressure-protectors (below the wing tanks on access panels 550CB ( 650CB) and 540PB ( 640PB)).
     (b) Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides.
     (c) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
   (5) Protect the fuselage as follows:
     (a) Apply the FILM - POLYETHYLENE on the ram air inlets.
     (b) Seal the FILM - POLYETHYLENE with the TAPE - ADHESIVE on all sides.
     (c) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
Subtask 10-11-00-555-085-A
B. Secondary Protection
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
F Secondary Protection ** ON A/C NOT FOR ALL
Airbus recommends that you install protection on the areas and systems that follow if there is sufficient time.
   (1) Protect the landing gears as follows:
     (a) Apply the FILM - POLYETHYLENE on the landing gear areas that follow and seal them with TAPE - ADHESIVE:
  • The chromium surfaces of the shock absorbers
  • The chromium surfaces of all the landing gear actuators
  • The attachment points of the landing gears
  • The wheel and brake assemblies.
  • The areas of the landing gear bay that open.
     (b) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
   (2) Apply the FILM - POLYETHYLENE on the aircraft openings that follow and seal them with the TAPE - ADHESIVE:
  • The sliding windows
  • The cockpit windshields and the fixed windows
  • The passenger/crew doors
  • The emergency exits
  • The cargo compartment doors
  • All the service panels and access doors
  • The APU air intake
  • The Ram Air Turbine (RAT) doors
  • The APU access doors (this includes the drain mast).
     (a) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
   (3) Protect the fuel-tank inerting system (if installed) as follows:
     (a) Apply the FILM - POLYETHYLENE on the Oxygen Enriched Air (OEA) outlet and seal it with the TAPE - ADHESIVE.
     (b) Record the locations where you put the FILM - POLYETHYLENE and the TAPE - ADHESIVE.
5. Close-up
Subtask 10-11-00-942-064-A
A. Aircraft Maintenance Configuration
   (1) Make an entry in the logbook.
   (2) Remove the access platform(s).
   (3) Make sure that all the external connections (external power supply, etc.) are disconnected from the aircraft.
   (4) Remove all the fixtures, tools, test and support equipment used during this procedure.
[Rev.10 from 2021] 2026.04.01 04:07:39 UTC
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