DOC AIRBUS | AMM A320FGeneral Data for Storage of Installed Engines [IAE]
TASK 71-00-00-550-010-A
General Data for Storage of Installed Engines
This task gives details of the necessary procedures for the preservation of an installed engine.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 71-00-00-869-337-A ** ON A/C NOT FOR ALL
Subtask 71-00-00-550-062-A ** ON A/C NOT FOR ALL
Subtask 71-00-00-941-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:27:49 UTC
General Data for Storage of Installed Engines
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:
DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.
WARNING:
DO NOT REMOVE THE FILLER CAP OF THE OIL TANK IMMEDIATELY AFTER ENGINE OPERATION. LET THE OIL PRESSURE DECREASE FOR A MINIMUM OF 5 MINUTES AFTER THE ENGINE SHUTDOWN. IF YOU OPEN THE FILLER CAP WHEN THERE IS PRESSURE IN THE TANK, THE OIL CAN BURN YOU DANGEROUSLY.
CAUTION:
YOU MUST NOT KEEP THE ENGINE IN STORAGE FOR LONGER THAN THE TIMES GIVEN IN THIS PROCEDURE. THESE ARE THE MAXIMUM FOR WHICH THE INSTALLED ENGINE CAN BE PRESERVED.
CAUTION:
YOU MUST DO ALL THE APPLICABLE PRESERVATION PROCEDURES WHEN AN ENGINE IS PUT INTO STORAGE. IF YOU DO NOT, CORROSION AND GENERAL DETERIORATION OF THE CORE ENGINE AND THE FUEL SYSTEM CAN OCCUR.
ZONE: 400
1. Reason for the JobThis task gives details of the necessary procedures for the preservation of an installed engine.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | FOIL - PLASTIC, TRANSPARENT |
| No specific | 1 | TAPE - ADHESIVE |
| No specific | AR | WARNING NOTICE(S) |
| 98D10003001000 | 1 | COVER-INLET COWL ENGINE |
| IAE1N20008 | 1 | COVER-COMMON NOZZLE |
| IAE1N20400 | 1 | COVER-INLET COWL |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V02-039) | moisture-resistant tape |
| (Material No.V02-041) | moisture-resistant tape |
| (Material No.V02-042) | moisture-resistant tape |
| (Material No.V02-044) | moisture-resistant tape |
| (Material No.V02-045) | moisture-resistant tape |
| (Material No.V02-046) | moisture-resistant tape |
| (Material No.V02-075) | desiccant |
| (Material No.V02-076) | humidity indicators |
| (Material No.V10-015) | temporary rust preventative |
| (Material No.V12-004) | PVC sheet |
| (Material No.V12-013) | VPI paper |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-21-51-200-010-A | Check of the IDG Oil Level and Differential Pressure Indicator (DPI) |
| TASK 71-00-00-100-010-A | Clean and Examine the Power Plant |
| TASK 71-00-00-550-011-A | Depreservation of Installed Engine |
| TASK 71-00-00-550-012-A | Preservation of the Main Line Bearings |
| TASK 71-00-00-600-010-A | Inhibit the Engine Fuel System |
| TASK 71-00-00-600-011-A | Protect the Engine External Surfaces |
| TASK 71-00-00-710-013-C | Test No.11 : High Power Assurance Test |
| TASK 78-31-00-710-041-A | Operational Test of the Thrust Reverser System with the CFDS |
| TASK 78-31-00-710-041-A-02 | Operational test of the Thrust Reverser without the CFDS and Engine Running |
Storage Requirements for Installed EnginesSubtask 71-00-00-869-337-A ** ON A/C NOT FOR ALL
A. Identify the anticipated storage time and local climate conditions in which the engine is to be stored. Compare this with
to get the correct procedure.
(2) If the engine has been operated or if it has stood in wet weather conditions prior to preservation, then a high-power assurance test (Ref. AMM TASK 71-00-00-710-013) should be performed.
(3) If an engine run was required for preservation, do a full thrust-reverser cycle (Ref. AMM TASK 78-31-00-710-041).
(4) For a non-compliant preservation, or if the engine has been stored for more than 12 months, before any engine run, do a Karl Fisher Test as per ASTMD-6304-04ae1:
(a) Collect and analyze an oil sample from the accessory gearbox prior to any oil servicing.
(b) Make sure that the water content is less than 1000 ppm to put the engine back into service. If the content is higher that 1000 ppm, further actions are required. Contact IAE Tech Services.
4. Procedureto get the correct procedure.
NOTE: Day zero (0) of the preservation counter is the day of the last engine run.
(1) If the engine is to be preserved for more than 31 days, the engine should be preserved within 24 hours after the last engine run. (2) If the engine has been operated or if it has stood in wet weather conditions prior to preservation, then a high-power assurance test (Ref. AMM TASK 71-00-00-710-013) should be performed.
(3) If an engine run was required for preservation, do a full thrust-reverser cycle (Ref. AMM TASK 78-31-00-710-041).
(4) For a non-compliant preservation, or if the engine has been stored for more than 12 months, before any engine run, do a Karl Fisher Test as per ASTMD-6304-04ae1:
(a) Collect and analyze an oil sample from the accessory gearbox prior to any oil servicing.
(b) Make sure that the water content is less than 1000 ppm to put the engine back into service. If the content is higher that 1000 ppm, further actions are required. Contact IAE Tech Services.
Subtask 71-00-00-550-062-A ** ON A/C NOT FOR ALL
A. Prepare the Engine for Storage
(1) Clean and examine the power plant (Ref. AMM TASK 71-00-00-100-010).
(2) Service the IDG oil system (Ref. AMM TASK 24-21-51-200-010).
(3) Protect the engine external surfaces (Ref. AMM TASK 71-00-00-600-011).
(4) Make sure that all the flange faces and tool faces that touch are clean.
(5) For standard torque data and procedures, refer to Standard Practice/Procedure Manual 70-23-11.
Subtask 71-00-00-620-064-A ** ON A/C NOT FOR ALL (1) Clean and examine the power plant (Ref. AMM TASK 71-00-00-100-010).
(2) Service the IDG oil system (Ref. AMM TASK 24-21-51-200-010).
(3) Protect the engine external surfaces (Ref. AMM TASK 71-00-00-600-011).
(4) Make sure that all the flange faces and tool faces that touch are clean.
(5) For standard torque data and procedures, refer to Standard Practice/Procedure Manual 70-23-11.
B. Preserve the Engine
(1) Carry out the applicable preservation procedures identified in Para. 3.A. and
(a) If required, refer to (Ref. AMM TASK 71-00-00-600-010).
(b) If required, refer to (Ref. AMM TASK 71-00-00-550-012).
(2) The preservation counter can be reset to zero if a successful engine test is completed with subsequent preservation at any time until the 12 months storage limits.
Subtask 71-00-00-553-050-A ** ON A/C NOT FOR ALL (1) Carry out the applicable preservation procedures identified in Para. 3.A. and
(a) If required, refer to (Ref. AMM TASK 71-00-00-600-010).
(b) If required, refer to (Ref. AMM TASK 71-00-00-550-012).
(2) The preservation counter can be reset to zero if a successful engine test is completed with subsequent preservation at any time until the 12 months storage limits.
NOTE: For more information about the definition of a successful engine test (Ref. AMM TASK 71-00-00-550-011).
C. Accessory Removal during Storage
(1) If an accessory is removed from a stored engine, the adjacent pipe connections must be blanked using a suitable cover to prevent the ingress of dust, dirt and moisture and prevent drainage of further inhibiting fluid.
(2) Replacement of the accessory before the end of the storage period is not recommended and should be avoided.
(3) After closure of the fan cowl doors or engine cover for any access to the engine, the inspection of the humidity indicators must be done again with the initial frequency as given in Step 4.H.
Subtask 71-00-00-620-065-A ** ON A/C NOT FOR ALL (1) If an accessory is removed from a stored engine, the adjacent pipe connections must be blanked using a suitable cover to prevent the ingress of dust, dirt and moisture and prevent drainage of further inhibiting fluid.
(2) Replacement of the accessory before the end of the storage period is not recommended and should be avoided.
(3) After closure of the fan cowl doors or engine cover for any access to the engine, the inspection of the humidity indicators must be done again with the initial frequency as given in Step 4.H.
D. Preserve the thrust reverser halves, if required by the anticipated storage time and climate conditions:
(1) Apply a layer of temporary rust preventative (Material No.V10-015) to the areas that are not painted:
(a) The actuators
(b) The valves
(c) The equipment housings
(d) The hydraulic tubes.
Subtask 71-00-00-553-051-A ** ON A/C NOT FOR ALL (1) Apply a layer of temporary rust preventative (Material No.V10-015) to the areas that are not painted:
(a) The actuators
(b) The valves
(c) The equipment housings
(d) The hydraulic tubes.
E. Use a desiccant (Material No.V02-075) and humidity indicators (Material No.V02-076) , if required by one anticipated storage time and climate conditions:
(1) Put desiccant (Material No.V02-075) into the intake and exhaust:
(b) Put 25 lb (11.3 kg) of desiccant (Material No.V02-075) onto the VPI paper in the intake.
(c) Put 25 lb (11.3 kg) of desiccant (Material No.V02-075) onto the VPI paper in the CNA.
(d) Put the humidity indicators (Material No.V02-076) into the intake and exhaust, adjacent to the desiccant.
(2) Use VPI paper (Material No.V12-013) to cover the air intake and exhaust. Make sure that the coating on the paper faces the engine:
(a) Cut a hole in the VPI paper (Material No.V12-013) that is 3 in. (76.2 mm) square and approximately 12 in. (304.80 mm) from the bottom edge.
(b) Seal the hole with a piece of FOIL - PLASTIC, TRANSPARENT and TAPE - ADHESIVE.
(c) Make sure that you can see the humidity indicators through the plastic sheet.
Subtask 71-00-00-420-108-A ** ON A/C NOT FOR ALL (1) Put desiccant (Material No.V02-075) into the intake and exhaust:
CAUTION:
MAKE SURE THAT THE DESICCANT IS PUT ON THE VPI PAPER. IF THE DESICCANT IS ON THE ENGINE CORROSION CAN OCCUR.
(a) Put VPI paper (Material No.V12-013) into the bottom of the intake cowl and Common Nozzle Assembly (CNA). The coated side of the VPI paper must face up. (b) Put 25 lb (11.3 kg) of desiccant (Material No.V02-075) onto the VPI paper in the intake.
(c) Put 25 lb (11.3 kg) of desiccant (Material No.V02-075) onto the VPI paper in the CNA.
(d) Put the humidity indicators (Material No.V02-076) into the intake and exhaust, adjacent to the desiccant.
(2) Use VPI paper (Material No.V12-013) to cover the air intake and exhaust. Make sure that the coating on the paper faces the engine:
(a) Cut a hole in the VPI paper (Material No.V12-013) that is 3 in. (76.2 mm) square and approximately 12 in. (304.80 mm) from the bottom edge.
(b) Seal the hole with a piece of FOIL - PLASTIC, TRANSPARENT and TAPE - ADHESIVE.
(c) Make sure that you can see the humidity indicators through the plastic sheet.
F. If it is required by the anticipated storage time and climate conditions, examine the indicators after the first 24 hours, after 7 days and then every 28 days. If one or more of the indicators show unsafe (indicated humidity is more than 40%), then replace the indicators and desiccant and repeat this procedure.
(1) If the engine has pre-SB72-0369 standard HPC stage 6 rotor path lining, the indicators should be examined after the first 24 hours and then every 7 days.
Subtask 71-00-00-420-109-A ** ON A/C NOT FOR ALL Subtask 71-00-00-390-050-A ** ON A/C NOT FOR ALL (1) If the engine has pre-SB72-0369 standard HPC stage 6 rotor path lining, the indicators should be examined after the first 24 hours and then every 7 days.
H. Seal all of the openings in the fan cowls and thrust reverser halves with PVC sheet (Material No.V12-004) and moisture-resistant tape (Material No.V02-039) , moisture-resistant tape (Material No.V02-041) , moisture-resistant tape (Material No.V02-042) , moisture-resistant tape (Material No.V02-044) , moisture-resistant tape (Material No.V02-045) , moisture-resistant tape (Material No.V02-046) .
Subtask 71-00-00-550-065-A ** ON A/C NOT FOR ALL NOTE: 98D10003001000 COVER-INLET COWL ENGINE can be used as an alternate cover as long as the vent holes in the cover are sealed and the perimeter of the cover is sealed to the cowling using moisture-resistant tape.
NOTE: If it is necessary to remove covers or blanks during the time in the storage, this must be done on a dry day and when humidity is relatively low, so that the desiccant is not open to atmospheric moisture.
NOTE: It is permissible to cover the engine inlet cowl, engine common nozzle and engine openings with either VPI paper (Material No.V12-013) or locally sourced clear thick polythene or PVC sheet with adhesive tape. Alternative covering must prevent dust, dirt and moisture from entering the engine.
I. If the engine has been stored for more than 12 months, do the steps that follow:
(1) Before performing engine testing, do a Karl Fischer test as per ASTMD-6304-04ae1.
(a) Collect and analyze an oil sample from the accessory gearbox prior to any oil servicing. Confirm that the water content is less than 1000 ppm for continued service. If the water content is greater than 1000 ppm, further action may be required. Contact IAE Tech Services.
5. Close-up(1) Before performing engine testing, do a Karl Fischer test as per ASTMD-6304-04ae1.
(a) Collect and analyze an oil sample from the accessory gearbox prior to any oil servicing. Confirm that the water content is less than 1000 ppm for continued service. If the water content is greater than 1000 ppm, further action may be required. Contact IAE Tech Services.
NOTE: If the Karl Fischer test is not successful, contact IAE Services.
Subtask 71-00-00-941-053-A ** ON A/C NOT FOR ALL
A. Put a WARNING NOTICE(S) in position on ENG panel 115VU to tell persons that the engine 1(2) is in preservation.
Subtask 71-00-00-869-133-A ** ON A/C NOT FOR ALL B. Safety Precautions
(1) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).
(1) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize the FADEC 1(2).