DOC AIRBUS | AMM A320FGround Test Requirements after Power Plant Module/Component Repair or Replacement Procedures [IAE]
TASK 71-00-00-710-017-B
Ground Test Requirements after Power Plant Module/Component Repair or Replacement Procedures
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
B. Referenced Information
3. Job Set-up
Subtask 71-00-00-869-165-A ** ON A/C NOT FOR ALL
Subtask 71-00-00-710-116-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 05:44:19 UTC
Ground Test Requirements after Power Plant Module/Component Repair or Replacement Procedures
ZONE: 400
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Work Zones and Access Panels
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 30-21-00-710-001-A | Operational Check of the Engine-Anti-Ice System Fault-Warning |
| TASK 30-21-00-710-002-A | Operational Check of the Engine-Air-Intake Ice-Protection System (with the Engines in operation) |
| TASK 71-00-00-700-011-B | Test No.13 : Pretested Replacement Engine Test |
| TASK 71-00-00-700-012-B | Test No.9 : Low Pressure (LP) Compressor (Fan) Trim Balancing - One Shot Method |
| TASK 71-00-00-700-012-B-01 | Test No.9A : LP Compressor (Fan) Trim Balancing - Trial Weight Method |
| TASK 71-00-00-700-022-B | Test No.8 : Vibration Survey |
| TASK 71-00-00-710-012-B | Test No.3 : Idle Leak Check |
| TASK 71-00-00-710-013-C | Test No.11 : High Power Assurance Test |
| TASK 71-00-00-710-022-B | Test No. 6: Electronic Engine Control (EEC) System Idle Test |
| TASK 71-00-00-710-043-A | Normal Engine Automatic-Start Procedure |
| TASK 71-00-00-710-045-A | Test No.1 : Dry Motor Leak Check |
| TASK 71-00-00-710-046-B | Test No.2 : Wet Motor Leak Check |
| TASK 71-00-00-710-047-A | Normal Engine Manual-Start Procedure |
| TASK 73-22-00-710-040-A | Operational Test of the FADEC SYSTEM on the Ground |
| TASK 73-22-34-710-040-A | Operational Test of the EEC |
| TASK 74-00-00-710-041-A | Operational Test of the Ignition System with the CFDS |
| TASK 74-00-00-710-041-A-01 | Operational Test of the ignition System without the CFDS |
Subtask 71-00-00-869-165-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. ProcedureSubtask 71-00-00-710-116-A ** ON A/C NOT FOR ALL
A. Description of the tests:
(1) The test requirements in this section must be used after the repair or replacement of power plant modules or components. This will make sure that the engine is safe and serviceable.
(2) The applicable tests are listed below:
(3) Power plant/module/section test requirements for removal and installation with or without overhaul, rework, repair or replacement.
(a) If more than one test is shown (example : 1, 2, 3 and 6), all the tests are necessary.
1 The engine must be removed to replace all modules except for the fan module and the external gearbox module.
(4) Component repair or replacement test requirements:
(a) At times, fuel, oil or electrical lines must be disconnected to give access to the component which must be repaired or replaced. If the lines are disconnected more tests are necessary.
1 If fuel lines are disconnected, test No. 3 is necessary.
2 If oil lines are disconnected, test No. 3 or 1 is necessary.
3 If electrical harnesses are disconnected, do an operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and an operational test of the Full Authority Digital Engine Control (FADEC) system (Ref. AMM TASK 73-22-00-710-040).
4 If there is a selection of tests (example: 3 or 1), the first test shown is recommended. If two tests are shown (example: 3 and 9), the two tests are necessary.
5 When checking the fuel system hardware for leaks, a dry motor leak check (Ref. AMM TASK 71-00-00-710-045) or a wet motor leak check (Ref. AMM TASK 71-00-00-710-046) may be used to identify leaks. These checks must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).
(5) Engine change or EEC replacement requirements:
(a) Do this procedure on installed engines before the engine test if you have changed the engine or replaced the EEC.
1 Check the Multipurpose Control and Display Unit (MCDU) and EEC configuration page for the EEC Part Number (P/N), engine rating number, engine bump configuration and engine Serial Number (S/N).
Subtask 71-00-00-710-116-B (1) The test requirements in this section must be used after the repair or replacement of power plant modules or components. This will make sure that the engine is safe and serviceable.
(2) The applicable tests are listed below:
| GROUND TEST | DESCRIPTION |
|---|---|
| TEST No. 1 | Dry motor leak check (Ref. AMM TASK 71-00-00-710-045). |
| TEST No. 2 | Wet motor leak check (Ref. AMM TASK 71-00-00-710-046). |
| TEST No. 3 | Idle leak check (Ref. AMM TASK 71-00-00-710-012). |
| TEST No. 5 | Reserved. |
| TEST No. 6 | Electronic Engine Control (EEC) system idle test (Ref. AMM TASK 71-00-00-710-022). |
| TEST No. 7 | Reserved. |
| TEST No. 8 | Vibration survey (Ref. AMM TASK 71-00-00-700-022). |
| TEST No. 9 | Trim balance (Ref. AMM TASK 71-00-00-700-012). |
| TEST No. 10 | Reserved. |
| TEST No. 11 | High power assurance test (Ref. AMM TASK 71-00-00-710-013). |
| TEST No. 12 | Reserved. |
| TEST No. 13 | Pretested engine replacement test (Ref. AMM TASK 71-00-00-700-011). |
(a) If more than one test is shown (example : 1, 2, 3 and 6), all the tests are necessary.
1 The engine must be removed to replace all modules except for the fan module and the external gearbox module.
| MODULE/SECTION | NECESSARY TEST(S) |
|---|---|
| Complete power plant | 3 and 6, then 13 |
| Fan module (if the engine was not removed) | 8 |
| Fan module (if the engine was removed) | 13* |
| Low Pressure Compressor (LPC)/intermediate case module | 3 and 6, then 13 as applicable. |
| Fan case section | 3 and 6, then 13 as applicable. |
| High Pressure Compressor (HPC) | 3 and 6, then 13 as applicable. |
| No. 4 bearing and combustion section High Pressure Turbine (HPT) module/stage 1 turbine nozzle | 3 and 6, then 13 |
| External gearbox module | 3 and 6, then 13 as applicable. |
(a) At times, fuel, oil or electrical lines must be disconnected to give access to the component which must be repaired or replaced. If the lines are disconnected more tests are necessary.
1 If fuel lines are disconnected, test No. 3 is necessary.
2 If oil lines are disconnected, test No. 3 or 1 is necessary.
3 If electrical harnesses are disconnected, do an operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and an operational test of the Full Authority Digital Engine Control (FADEC) system (Ref. AMM TASK 73-22-00-710-040).
4 If there is a selection of tests (example: 3 or 1), the first test shown is recommended. If two tests are shown (example: 3 and 9), the two tests are necessary.
5 When checking the fuel system hardware for leaks, a dry motor leak check (Ref. AMM TASK 71-00-00-710-045) or a wet motor leak check (Ref. AMM TASK 71-00-00-710-046) may be used to identify leaks. These checks must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).
| COMPONENT | NECESSARY TEST |
|---|---|
| IGNITION SYSTEM: | |
| Ignition exciter, ignition lead or igniter plug | Operational test of the ignition system (Ref. AMM TASK 74-00-00-710-041). |
| OIL SYSTEM: | |
| Gearbox crank cover | 3 |
| Oil tank | 3 |
| Oil tank valve | 3 |
| Fuel-cooled oil cooler | 3 or 1 |
| Air-cooled oil cooler | 3 or 1 |
| Pressure oil pump/filter housing | 3 or 1 |
| Pressure oil filter element | 3 or 1 |
| Scavenge oil pump and filter housing | 3 or 1 |
| Scavenge oil filter element | 3 or 1 |
| Deoiler | 3 |
| Carbon drive seal assembly and mating ring (deoiler) | 3 |
| Carbon drive seal assembly and mating ring (accessory drives) | 3 |
| Pressure oil tubes | 3 or 1 |
| Scavenge oil tubes | 3 |
| No. 4 bearing compartment scavenge valve | 11 |
| No. 5 bearing compartment cover | 3 |
| Oil temperature thermocouples | 3 |
| Oil quantity transmitter | 3 |
| Oil pressure switches or transducer | 3 |
| Sight glass | No test is necessary. |
| Magnetic chip detector housing | 3 |
| STARTING SYSTEM: | |
| Starter or starter valve | 1 or engine start (Ref. AMM TASK 71-00-00-710-043) or (Ref. AMM TASK 71-00-00-710-047). |
| Starter duct | No test is necessary. |
| FUEL SYSTEM: | |
| Fuel pump | 3 or 2 |
| Fuel filter element | 3 or 1 |
| Fuel nozzle | 3 or 2 |
| Fuel diverter and return valve | 3 or 1 |
| Fuel distribution valve | 3 or 2 |
| Fuel Metering Unit (FMU) | 3 or 2 and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| Fuel cooled oil cooler | 3 or 1 |
| Fuel manifold | 3 or 2 |
| Fuel tubes (before the FMU) | 3 or 1 |
| Fuel tubes (after the FMU) | 3 or 2 |
| Fuel pressure switches | 3 or 1 |
| Integrated Drive Generator (IDG) fuel-cooled oil cooler | 3 or 1 |
| Fuel flow transmitter | 3 or 2 |
| Fuel temperature sensor | 3 or 1 |
| ELECTRONIC CONTROL SYSTEM: | |
| EEC | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040) and test No. 6. |
| Engine dedicated alternator | 6 |
| ELECTRICAL HARNESSES: | |
| EEC harness - fan | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| EEC harness - core | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| ENGINE INDICATING: | |
| N1 speed/trim balance probe | 2, 3, 6, 8 and 13 |
| P2/T2 sensor and tubes | No test is necessary. |
| P3/T3 sensor | No test is necessary. |
| P 4.9 sensor and manifold | No test is necessary. |
| Vibration transducer | 3 |
| Exhaust Gas Temperature (EGT) harness or thermocouple | 3 |
| AIR SYSTEMS: | |
| No. 4 bearing compartment air cooler and tubes | No test is necessary. |
| Turbine cooling tubes | No test is necessary. |
| Stage 10 to HPT air valve | No test is necessary. |
| Stage 10 air solenoid valve | No test is necessary. |
| HPT/Low Pressure Turbine (LPT) Active Clearance Control (ACC) ducts and manifolds | No test is necessary. |
| ACC valve | No test is necessary. |
| ACC actuator | 3 or 1 |
| Ignition cooling tubes and housing | No test is necessary. |
| AIRFLOW CONTROL SYSTEMS: | |
| LPC bleed master and slave actuators | 3 or 1, then 11 |
| Variable Stator Vane Actuator (VSVA) | 3 or 1, then 11 |
| HPC stage 7 solenoid valve | 3 |
| HPC stage 7 bleed valve | 3 |
| HPC stage 10 solenoid valve | 3 |
| HPC stage 10 bleed valve | 3 |
| Air intake anti-ice valve | Operational test of the engine air intake anti-ice system (Ref. AMM TASK 30-21-00-710-001) or (Ref. AMM TASK 30-21-00-710-002). |
(a) Do this procedure on installed engines before the engine test if you have changed the engine or replaced the EEC.
1 Check the Multipurpose Control and Display Unit (MCDU) and EEC configuration page for the EEC Part Number (P/N), engine rating number, engine bump configuration and engine Serial Number (S/N).
NOTE: If the engine S/N displayed on the MCDU is in the range between 13191 and 15000, then you can add 5000 to this value to get the actual engine S/N.
2 Check the data on the engine identification plate and data entry plug backshell for each of the two installed engines. It must be the same data as given in step 4.A.(5)(a)1_. Make sure that the data given below is the same for each of the two installed engines:- EEC P/N (engine identification plate only)
- Engine rating number
- Engine bump configuration
- Engine S/N (each engine).
A. Description of the tests:
(1) The test requirements in this section must be used after the repair or replacement of power plant modules or components. This will make sure that the engine is safe and serviceable.
(2) The applicable tests are listed below:
(3) Power plant/module/section test requirements for removal and installation with or without overhaul, rework, repair or replacement.
(a) If more than one test is shown (example : 1, 2, 3 and 6), all the tests are necessary.
1 The engine must be removed to replace all modules except for the fan module and the external gearbox module.
(4) Component repair or replacement test requirements:
(a) At times, fuel, oil or electrical lines must be disconnected to give access to the component which must be repaired or replaced. If the lines are disconnected more tests are necessary.
1 If fuel lines are disconnected, test No. 3 is necessary.
2 If oil lines are disconnected, test No. 3 or 1 is necessary.
3 If electrical harnesses are disconnected, do an operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and an operational test of the Full Authority Digital Engine Control (FADEC) system (Ref. AMM TASK 73-22-00-710-040).
4 If there is a selection of tests (example: 3 or 1), the first test shown is recommended. If two tests are shown (example: 3 and 9), the two tests are necessary.
5 When checking the fuel system hardware for leaks, a dry motor leak check (Ref. AMM TASK 71-00-00-710-045) or a wet motor leak check (Ref. AMM TASK 71-00-00-710-046) may be used to identify leaks. These checks must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).
(5) Engine change or EEC replacement requirements:
(a) Do this procedure on installed engines before the engine test if you have changed the engine or replaced the EEC.
1 Check the Multipurpose Control and Display Unit (MCDU) and EEC configuration page for the EEC Part Number (P/N), engine rating number, engine bump configuration and engine Serial Number (S/N).
2 Check the data on the engine identification plate and data entry plug backshell for each of the two installed engines. It must be the same data as given in step 4.A.(5)(a)1_. Make sure that the data given below is the same for each of the two installed engines:
(1) The test requirements in this section must be used after the repair or replacement of power plant modules or components. This will make sure that the engine is safe and serviceable.
(2) The applicable tests are listed below:
| GROUND TEST | DESCRIPTION |
|---|---|
| TEST No. 1 | Dry motor leak check (Ref. AMM TASK 71-00-00-710-045). |
| TEST No. 2 | Wet motor leak check (Ref. AMM TASK 71-00-00-710-046). |
| TEST No. 3 | Idle leak check (Ref. AMM TASK 71-00-00-710-012). |
| TEST No. 5 | Reserved. |
| TEST No. 6 | Electronic Engine Control (EEC) system idle test (Ref. AMM TASK 71-00-00-710-022). |
| TEST No. 7 | Reserved. |
| TEST No. 8 | Vibration survey (Ref. AMM TASK 71-00-00-700-022). |
| TEST No. 9 | Trim balance (Ref. AMM TASK 71-00-00-700-012). |
| TEST No. 10 | Reserved. |
| TEST No. 11 | High power assurance test (Ref. AMM TASK 71-00-00-710-013). |
| TEST No. 12 | Reserved. |
| TEST No. 13 | Pretested engine replacement test (Ref. AMM TASK 71-00-00-700-011). |
(a) If more than one test is shown (example : 1, 2, 3 and 6), all the tests are necessary.
1 The engine must be removed to replace all modules except for the fan module and the external gearbox module.
| MODULE/SECTION | NECESSARY TEST(S) |
|---|---|
| Complete power plant | 3 and 6, then 13 |
| Fan module (if the engine was not removed) | 8 |
| Fan module (if the engine was removed) | 13* |
| Low Pressure Compressor (LPC)/intermediate case module | 3 and 6, then 13 as applicable. |
| Fan case section | 3 and 6, then 13 as applicable. |
| High Pressure Compressor (HPC) | 3 and 6, then 13 as applicable. |
| No. 4 bearing and combustion section High Pressure Turbine (HPT) module/stage 1 turbine nozzle | 3 and 6, then 13 |
| External gearbox module | 3 and 6, then 13 as applicable. |
(a) At times, fuel, oil or electrical lines must be disconnected to give access to the component which must be repaired or replaced. If the lines are disconnected more tests are necessary.
1 If fuel lines are disconnected, test No. 3 is necessary.
2 If oil lines are disconnected, test No. 3 or 1 is necessary.
3 If electrical harnesses are disconnected, do an operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and an operational test of the Full Authority Digital Engine Control (FADEC) system (Ref. AMM TASK 73-22-00-710-040).
4 If there is a selection of tests (example: 3 or 1), the first test shown is recommended. If two tests are shown (example: 3 and 9), the two tests are necessary.
5 When checking the fuel system hardware for leaks, a dry motor leak check (Ref. AMM TASK 71-00-00-710-045) or a wet motor leak check (Ref. AMM TASK 71-00-00-710-046) may be used to identify leaks. These checks must be followed by an idle leak check (Ref. AMM TASK 71-00-00-710-012).
| COMPONENT | NECESSARY TEST |
|---|---|
| IGNITION SYSTEM: | |
| Ignition exciter, ignition lead or igniter plug | Operational test of the ignition system (Ref. AMM TASK 74-00-00-710-041). |
| OIL SYSTEM: | |
| Gearbox crank cover | 3 |
| Oil tank | 3 |
| Oil tank valve | 3 |
| Fuel-cooled oil cooler | 3 or 1 |
| Air-cooled oil cooler | 3 or 1 |
| Pressure oil pump/filter housing | 3 or 1 |
| Pressure oil filter element | 3 or 1 |
| Scavenge oil pump and filter housing | 3 or 1 |
| Scavenge oil filter element | 3 or 1 |
| Deoiler | 3 |
| Carbon drive seal assembly and mating ring (deoiler) | 3 |
| Carbon drive seal assembly and mating ring (accessory drives) | 3 |
| Pressure oil tubes | 3 or 1 |
| Scavenge oil tubes | 3 |
| No. 4 bearing compartment scavenge valve | 11 |
| No. 5 bearing compartment cover | 3 |
| Oil temperature thermocouples | 3 |
| Oil quantity transmitter | 3 |
| Oil pressure switches or transducer | 3 |
| Sight glass | No test is necessary. |
| Magnetic chip detector housing | 3 |
| STARTING SYSTEM: | |
| Starter or starter valve | 1 or engine start (Ref. AMM TASK 71-00-00-710-043) or (Ref. AMM TASK 71-00-00-710-047). |
| Starter duct | No test is necessary. |
| FUEL SYSTEM: | |
| Fuel pump | 3 or 2 |
| Fuel filter element | 3 or 1 |
| Fuel nozzle | 3 or 2 |
| Fuel diverter and return valve | 3 or 1 |
| Fuel distribution valve | 3 or 2 |
| Fuel Metering Unit (FMU) | 3 or 2 and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| Fuel cooled oil cooler | 3 or 1 |
| Fuel manifold | 3 or 2 |
| Fuel tubes (before the FMU) | 3 or 1 |
| Fuel tubes (after the FMU) | 3 or 2 |
| Fuel pressure switches | 3 or 1 |
| Integrated Drive Generator (IDG) fuel-cooled oil cooler | 3 or 1 |
| Fuel flow transmitter | 3 or 2 |
| Fuel temperature sensor | 3 or 1 |
| ELECTRONIC CONTROL SYSTEM: | |
| EEC | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040) and test No. 6. |
| Engine dedicated alternator | 6 |
| ELECTRICAL HARNESSES: | |
| EEC harness - fan | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| EEC harness - core | Operational test of the EEC (Ref. AMM TASK 73-22-34-710-040) and operational test of the FADEC system (Ref. AMM TASK 73-22-00-710-040). |
| ENGINE INDICATING: | |
| N1 speed/trim balance probe | 2, 3, 6, 8 and 13 |
| P2/T2 sensor and tubes | No test is necessary. |
| P3/T3 sensor | No test is necessary. |
| P 4.9 sensor and manifold | No test is necessary. |
| Vibration transducer | 3 |
| Exhaust Gas Temperature (EGT) harness or thermocouple | 3 |
| AIR SYSTEMS: | |
| No. 4 bearing compartment air cooler and tubes | No test is necessary. |
| Turbine cooling tubes | No test is necessary. |
| Stage 10 to HPT air valve | No test is necessary. |
| Stage 10 air solenoid valve | No test is necessary. |
| HPT/Low Pressure Turbine (LPT) Active Clearance Control (ACC) ducts and manifolds | No test is necessary. |
| ACC valve | No test is necessary. |
| ACC actuator | 3 or 1 |
| Ignition cooling tubes and housing | No test is necessary. |
| AIRFLOW CONTROL SYSTEMS: | |
| LPC bleed master and slave actuators | 3 or 1, then 11 |
| Variable Stator Vane Actuator (VSVA) | 3 or 1, then 11 |
| HPC stage 7 solenoid valve | 3 |
| HPC stage 7 bleed valve | 3 |
| HPC stage 10 solenoid valve | 3 |
| HPC stage 10 bleed valve | 3 |
| Air intake anti-ice valve | Operational test of the engine air intake anti-ice system (Ref. AMM TASK 30-21-00-710-001) or (Ref. AMM TASK 30-21-00-710-002). |
(a) Do this procedure on installed engines before the engine test if you have changed the engine or replaced the EEC.
1 Check the Multipurpose Control and Display Unit (MCDU) and EEC configuration page for the EEC Part Number (P/N), engine rating number, engine bump configuration and engine Serial Number (S/N).
2 Check the data on the engine identification plate and data entry plug backshell for each of the two installed engines. It must be the same data as given in step 4.A.(5)(a)1_. Make sure that the data given below is the same for each of the two installed engines:
- EEC P/N (engine identification plate only)
- Engine rating number
- Engine bump configuration
- Engine S/N (each engine).