The deactivation tasks give the procedures necessary to permit continued flight operations with the failure of system or a part of a system, in compliance with the MMEL and CDL requirements. These procedures are given at AMM Chapter/Section level (XX-XX-00).

The deactivation task reference has the Function Code 040 (CH-SE-SU-040-xxx).

The Deactivation/Reactivation procedures come from the Master Minimum Equipment List (MMEL) and the Configuration Deviation List (CDL). To find the related AMM procedures, refer to the MMEL or CDL.

Deactivation Task List – A320

The complete deactivation task list for airbus A320 family (aircraft type A318, A319, A320, A321) aircraft fitted with engine CFMB or CFML.

Air Conditioning System – ATA 21

TASKSAMM REFREQUIREMENTS
Deactivation of the Cabin Recirculation Fan – FAA Operators Only21-21-51-040-801-AMMEL 21-21-01
Deactivation of the Lavatory/Galley Extraction Fan21-23-00-040-001-AMMEL 21-23-01A
Deactivation of the Skin Exchanger Inlet Bypass Valve21-26-00-040-001-AMMEL 21-26-03A
Deactivation of the Skin Air Outlet Valve in the Closed Position with the Internal Flap in the Open Position21-26-00-040-002-AMMEL 21-26-04A
Deactivation of the Conditioned-Air Inlet Valve21-26-00-040-003-AMMEL 21-26-08A
Deactivation of the Skin Air Inlet Valve21-26-00-040-004-AMMEL 21-26-05A
Avionics Equipment Ventilation Computer Inoperative (AEVC) – Check of the Ventilation System21-26-00-040-005-AMMEL 21-26-10A
Blower Fan Inoperative – Check that the Air Conditioned Inlet Valve is Open21-26-00-040-006-AMMEL 21-26-01B
Extract Fan Inoperative – Check of Conditioned-Air Inlet Valve Open21-26-00-040-007-AMMEL 21-26-02B
Skin-Exchanger Isolation Valve Inoperative – Check of the Open Position of the Valve21-26-00-040-008-AMMEL 21-26-06A
Deactivation of the Avionics Ventilation Filter21-26-00-040-009-AMMEL 21-26-09B
Blower Fault Warning – Check of the Blower Fan and AVNCS SYS FAULT Warning21-26-00-040-010-AMMEL 21-09-01A
Extract Fault Warning – Check of the Extract Fan and AVNCS SYS FAULT Warning21-26-00-040-011-AMMEL 21-09-02A
ADIRU/AVNCS VENT Caution Light Inoperative21-26-00-040-012-AMMEL 24-30-09A
Deactivation of the Conditioned-Air Inlet Valve when the Blower Fan is Inoperative21-26-00-040-013-AMMEL 21-26-01C
Skin Air-Inlet Valve Inoperative – Do the Deactivation of the Conditioned-Air Inlet Valve21-26-00-040-014-AMMEL 21-26-05B
Extract Fan Inoperative – Do the Deactivation of the Conditioned-Air Inlet Valve21-26-00-040-015-AMMEL 21-26-02C
Deactivation of the Skin-Exchanger Isolation Valve21-26-00-040-016-AMMEL 21-26-06B
Avionics Ventilation Filter Inoperative – Do the Deactivation of the Conditioned-Air Inlet Valve21-26-00-040-017-AMMEL 21-26-09C
Deactivation of the Blower Fan – FAA Operators Only21-26-00-040-018-AMMEL 21-26-01
Deactivation of the Blower Fan – FAA Operators Only21-26-00-040-019-AMMEL 21-26-01
Deactivation of the Extract Fan – FAA Operators Only21-26-00-040-020-AMMEL 21-26-02
Deactivation of the Extract Fan – FAA Operators Only21-26-00-040-021-AMMEL 21-26-02
Deactivation of the Extract Fan – FAA Operators Only21-26-00-040-022-AMMEL 21-26-02
Deactivation of the Blower Fan – FAA Operators Only21-26-00-040-023-AMMEL 21-26-01
Deactivation of the Fwd Cargo-Compartment Ventilation Isolation-Valves21-28-00-040-001-AMMEL 21-28-02B
Deactivation of the Aft-Cargo-Compartment Ventilation Isolation-Valves21-28-00-040-002-AMMEL 21-28-04B
Verification Test (Safety Valves and Outflow Valve)21-31-00-040-001-AMMEL 21-31-03A
Verification Test of the Automatic Cabin-Pressure Control-Systems21-31-00-040-002-AMMEL 21-31-02A
Verification Test of the Safety Valves (Position Indication on ECAM CAB PRESS Page)21-31-00-040-004-AMMEL 21-07-02-02A
Verification Test of the Safety Valves (OPEN Caution on ECAM)21-31-00-040-005-AMMEL 21-09-03A
Deactivation of the CPC221-31-00-040-006-AMMEL 21-31-01B
Deactivation of the CPC121-31-00-040-007-AMMEL 21-31-01A
Deactivation of the AFT Cargo Compartment-Heating Trim-Air Valve21-43-00-040-002-AMMEL 21-43-02B
Deactivation of the AFT Cargo Compartment-Heating Pressure-Regulating Valve21-43-00-040-003-AMMEL 21-43-02B
Deactivation of the Pack Flow-Control Valve21-51-00-040-001-AMMEL 21-51-01A
Deactivation of the Air Conditioning Pack21-51-00-040-002-AMMEL 21-52-01D,
MMEL 21-52-01E,
MMEL 21-52-01F
Operational Test of the Emergency Ram-Air Inlet System21-55-00-040-001-AMMEL 21-07-01-06A
Deactivation of the Emergency Ram-Air Inlet in closed Position21-55-00-040-002-AMMEL 21-55-01A
Deactivation of the Air Inlet Flap in the Open Position21-61-00-040-002-AMMEL 21-52-02A
Deactivation of the Trim Air Valve21-63-00-040-001-AMMEL 21-63-02D
Deactivation of the Hot-Air Pressure-Regulating Valve21-63-00-040-002-AMMEL 21-63-03C
Zone Controller – Deactivation of the Hot-Air Pressure-Regulating Valve21-63-00-040-004-AMMEL 21-63-01C

Auto Flight – ATA 22

TASKSAMM REFREQUIREMENTS
Check of the Throttle Control Units22-30-00-040-004-AMMEL 22-30-01A
Deactivation of FAC222-66-00-040-001-AMMEL 22-66-01
Deactivation of the Flight Management and Guidance Computer (FMGC)22-83-00-040-802-AMMEL 22-83-01

Communication System – ATA 23

TASKSAMM REFREQUIREMENTS
Deactivation of the HF System23-11-00-040-801-AMMEL 23-11-01
Deactivation of the VHF System23-12-00-040-801-AMMEL 23-12-01
Deactivation of the Landscape Camera23-36-00-040-001-ACDL 23-02
Deactivation of the Radio Push-to-Talk (PTT) Switch23-51-00-040-001-AMMEL 23-51-06B,
MMEL 23-51-06A
Deactivation of the Forward Attendant Panel23-73-00-040-002-AMMEL 23-74-01A
Deactivation of the Flight Attendant Panel23-73-00-040-003-AMMEL 23-74-01B
Deactivation of the Flight Attendant Panel – Slide Bottle Pressure Indication, Emergency Exits23-73-00-040-004-AMMEL 23-74-08A
Deactivation of the Programming and Test Panel23-73-00-040-005-AMMEL 23-74-04A
Deactivation of the Programming and Test Panel – Slide Bottle Pressure Indication, Emergency Exits23-73-00-040-006-AMMEL 23-74-07A
Deactivation of the Programming and Test Panel – Emergency System Test, Cabin Emergency Lighting System23-73-00-040-007-AMMEL 23-74-01A

Electrical System ATA – 24

TASKSAMM REFREQUIREMENTS
Check of the AC Main Generation Maintenance Condition24-20-00-040-001-AMMEL 24-22-01A
RAT Extension Control – Check of the RAT Manual Extension24-20-00-040-002-AMMEL 24-24-02A
Deactivation of the APU Generator by Installation of the Substitution Kit24-23-00-040-001-AMMEL 24-23-01H, MMEL 24-23-01C
Deactivation of the APU Generator by Removal of the Quill Shaft24-23-00-040-002-AMMEL 24-23-01I, MMEL 24-23-01C
Do a Charging Cycle of the Battery Connected with the Battery Charge Limiter (BCL) or Replacement of the Battery24-30-00-040-001-AMMEL 24-38-02A
Deactivation of the Transformer Rectifier TR224-30-00-040-002-AMMEL 24-32-01B
Visual Inspection of the External Power Receptacle24-41-00-040-001-AMMEL 24-41-02A
Deactivation of the C/B TRIPPED Warning on the Upper ECAM DU24-50-00-040-001-AMMEL 24-09-02A
Deactivation of the Galley Supply System24-51-00-040-001-AMMEL 24-26-02B
Deactivation of the Galley Supply System24-56-00-040-001-AMMEL 24-26-01B
Deactivation of the Galley Supply System24-56-00-040-002-AMMEL 24-26-02A

Equipment and Furnishings – ATA 25

TASKSAMM REFREQUIREMENTS
Deactivation of the Defective Recline System of the CAPT (F/O) Seat25-11-00-040-001-AMMEL 25-11-03A
Deactivation of the Third Occupant Seat25-11-00-040-003-AMMEL 25-12-01B
Deactivation of the Fourth Occupant Seat25-11-00-040-004-AMMEL 25-12-05B
Deactivation of the Inoperative Adjustment System of the CAPT (F/O) Seat (Electrical Control)25-11-00-040-802-AMMEL 25-11-01-01
Deactivation of the Captain and/or First Officer Sliding-Tables25-13-00-040-001-AMMEL 25-13-01B
Deactivation of the Captain and/or First Officer Retractable Foot-Rests25-13-00-040-002-AMMEL 25-13-02B
Deactivation of Overhead Stowage Bin(s)/Cabin and Galley Storage Compartment25-20-00-040-001-AMMEL 25-28-41A
Deactivation of the Passenger-Seat Recline Function (Locking of the Passenger Seat Backrest in the Taxi, Takeoff and Landing (TTOL) position)25-21-00-040-801-AMMEL 25-20-02A
Safetying of the Passenger Seat Backrest in the Taxi, Takeoff and Landing (TTOL) position25-21-00-040-802-AMMEL 25-20-02B
Safetying of the backrest mounted Passenger Meal Table25-21-00-040-803-AMMEL 25-20-07A
Safetying of the In-armrest Mounted Passenger-Meal-Table25-21-00-040-804-AMMEL 25-20-07A
Deactivation of a Defective Cabin Attendant Seat25-22-00-040-001-AMMEL 25-20-09A,
MMEL 25-20-09B,
MMEL 25-20-09C
Deactivation of the Galley-Waste-Compartment Flapper-Door25-35-00-040-001-AMMEL 25-35-01A
Deactivation of the Galley-Waste-Compartment Access Door (If Installed)25-35-00-040-802-AMMEL 25-35-02A
Deactivation of the Toilet Waste-Compartment Flapper-Door25-40-00-040-001-AMMEL 25-40-01A
Deactivation of the Toilet Waste-Compartment Access-Door25-40-00-040-802-AMMEL 25-40-04A
Deactivation of the Protection Panel(s) for the Decompression Panel(s) at the Forward Partition25-54-00-040-801-AMMEL 25-50-05A
Check of the Emergency-Exit Slide-Bottle Pressure because of a Low Pressure Indication on the Programming and Test Panel or Flight Attendant Panel25-62-00-040-001-AMMEL 25-62-07A
Pre-Flight Installation of the Enclosure Door, when the Escape-Slide is Removed25-62-00-040-007-AMMEL 25-62-01B
Check of the Passenger-Door Slide-Bottle Pressure because of a Low Pressure Indication on the Programming and Test Panel or Flight Attendant Panel25-62-00-040-008-AMMEL 25-62-06A

Fire Protection – ATA 26

TASKSAMM REFREQUIREMENTS
Deactivation of the Lavatory26-17-00-040-801-AMMEL 26-17-01A
Deactivation of the Smoke-Detection Control Unit (SDCU)26-17-00-040-802-AMMEL 26-17-02A
Engine Bottle Pressure Check26-21-00-040-001-AMMEL 26-01-01-02A,
MMEL 26-01-01-02B
ENG FIRE TEST – Circuit Verification26-21-00-040-002-AMMEL 26-01-01-31A
Test of the Engine SQUIB Legend of the AGENT Pushbutton switch26-21-00-040-003-AMMEL 26-01-01-03A
Bottle Pressure Check26-22-00-040-004-AMMEL 26-01-01-05A
Bottle Weight Check26-22-00-040-004-A 01MMEL 26-01-01-05A
Circuit Verification26-22-00-040-005-AMMEL 26-01-01-06A
Bottle Pressure Switch Check26-22-00-040-007-AMMEL 26-22-02A
Check of the remaining Squib Integrity26-22-00-040-008-AMMEL 26-22-03A
To make sure that the APU Automatic Fire Extinguishing System is operative when the APU FIRE Light on External Power Panel is inoperative26-22-00-040-010-AMMEL 26-22-06A
To make sure that the APU Automatic Fire Extinguishing System is operative when the APU SHUT OFF PB on External Power Panel is inoperative26-22-00-040-011-AMMEL 26-22-07A
Test Circuit Verification26-22-00-040-012-AMMEL 26-01-01-32A
Cargo Compartment DISCH/BTL LT – Verification of Fire-Extinguisher Bottle Weight26-23-00-040-001-AMMEL 26-01-02-01A

Flight Controls – ATA 27

TASKSAMM REFREQUIREMENTS
Deactivation of the Aileron Servo Control27-14-00-040-001-AMMEL 27-14-01A,
MMEL 27-14-02A,
MMEL 27-14-03A,
MMEL 27-14-04A
Deactivation of the Channel 1 of the Rudder Trim Actuator27-22-00-040-001-AMMEL 22-60-01A
Deactivation of the Channel 1 of the Rudder Travel Limitation Unit27-23-00-040-001-AMMEL 22-60-01A
Deactivation of the Yaw Damper Servo-Actuator27-26-00-040-001-AMMEL 22-60-04A
Elevator Servocontrol Position-Transducer – Connection of the Spare Transducer27-34-00-040-001-AMMEL 27-34-02A
Check of the synchronization between pitch trim handwheel and stabilizer27-40-00-040-001-AMMEL 27-07-05A
Deactivation of the Slat and Flap Control Computer (SFCC) No. 2 Flap Channel27-51-00-040-001-AMMEL 27-51-01A
Flap WTB Solenoid – WTB Test Procedure27-51-00-040-004-AMMEL 27-51-02A
Deactivation of the Slat and Flap Control Computer (SFCC) No. 2 Slat Channel27-51-00-040-005-AMMEL 27-81-01A
Deactivation of the Spoiler Servo Control27-64-00-040-001-AMMEL 27-64-01A,
MMEL 27-64-02A,
MMEL 27-64-03A,
MMEL 27-64-04A,
MMEL 27-64-05A
Slat WTB Solenoids – WTB Test Procedure27-81-00-040-001-AMMEL 27-81-02A
Operational Test of the Thrust Reverser System27-92-00-040-003-AMMEL 27-92-02A
Deactivation of the Elevator Aileron Computer27-93-00-040-001-AMMEL 27-93-01A
Deactivation of the Stabilizer Actuator Electrical Motor n°227-93-00-040-002-AMMEL 27-40-02A
Deactivation of the Spoiler Elevator Computer (SEC)27-94-00-040-002-AMMEL 27-94-01A,
MMEL 27-94-02A
Deactivation of the Spoiler Elevator Computer 3 (SEC)27-94-00-040-802-AMMEL 27-94-03P,
MMEL 27-94-01
Deactivation of the Flight Control Data Concentrator (FCDC) 2 (FAA only)27-95-00-040-801-AMMEL 27-95-01

Fuel – ATA 28

TASKSAMM REFREQUIREMENTS
To Set the Transfer Valves Open for Flight28-12-00-040-003-AMMEL 28-12-01B
To Set the LH Wing Transfer Valve Open for Flight28-15-00-040-001-AMMEL 28-15-01C
To Set the RH Wing Transfer Valve Open for Flight28-15-00-040-002-AMMEL 28-15-02C
Check Operation of the Recirculation System When Main Fuel Pump 2 does not Operate28-21-00-040-001-AMMEL 28-21-01B
Functional Test of Engine LP Fuel Valve with a Defective Actuator Motor28-24-00-040-002-AMMEL 28-24-01A
Refuel/Defuel Cap – Deactivation Procedure28-25-00-040-003-ACDL 28-01
Deactivation of the Transfer Defuel Valve28-25-00-040-004-AMMEL 28-25-04A
Refuel Valve – Refuel Procedure Using Manual Plunger Override28-25-00-040-005-AMMEL 28-25-03A
Refuel/Defuel Control Panel – Manual Refuel28-25-00-040-008-AMMEL 28-25-05B,
MMEL 28-25-05A
APU LP VALVE – Deactivation28-29-00-040-002-AMMEL 28-29-01B
APU LP Valve Indication – Valve Closure Procedure28-40-00-040-001-AMMEL 28-07-04-02A
Crossfeed Valve Indication – Valve Operating Procedure28-40-00-040-002-AMMEL 28-07-04-03A,
MMEL 28-07-04-03B
Check of the Fuel Quantity Indicating System, When an Outer Tank Indication is Unserviceable28-40-00-040-003-AMMEL 28-07-01-03A,
MMEL 28-07-01-03C
Transfer Valve Indication – Intercell Transfer28-40-00-040-004-AMMEL 28-07-04-04A
Check of the Fuel Quantity Indicating System, When an Inner Tank Indication is Unserviceable28-40-00-040-005-AMMEL 28-07-01-04A
Check of the Fuel Quantity Indicating System, When the Center Tank Indication is Unserviceable28-40-00-040-006-AMMEL 28-07-01-05A
Engine LP Valve Indication – When ECAM Display Inoperative28-40-00-040-009-AMMEL 28-07-04-01A
Refuel Procedure for use with an Unserviceable Magnetic Level Indicator (MLI)28-40-00-040-012-AMMEL 28-43-01B
Check of the High Level Fuel-Detection-System, When an Outer Tank Indication is Unserviceable28-40-00-040-802-AMMEL 28-07-01-03B,
MMEL 28-07-01-03D
Check of the High Level Fuel-Detection-System, When an Inner Tank Indication is Unserviceable28-40-00-040-803-AMMEL 28-07-01-04B

Hydraulic System – ATA 29

TASKSAMM REFREQUIREMENTS
Deactivation of the Case Drain Filter of the Engine Driven Pump of the Green Hydraulic System29-10-00-040-001-AMMEL 29-10-09A
Deactivation of the Case Drain Filter of the Engine Driven Pump of the Yellow Hydraulic System29-10-00-040-002-AMMEL 29-10-09A
Deactivation of the Case Drain Filter of the Electric Pump of the Blue Hydraulic System29-10-00-040-003-AMMEL 29-10-09A
Deactivation of the Green Power Accumulator29-10-00-040-004-AMMEL 29-10-04A
Deactivation of the Blue Power Accumulator29-10-00-040-005-AMMEL 29-10-04A
Deactivation of the Yellow Power Accumulator29-10-00-040-006-AMMEL 29-10-04A
Deactivation of the Manual Selector Valve29-16-00-040-001-AMMEL 29-20-42A
Deactivation of the Yellow Electric Pump29-24-00-040-001-AMMEL 29-24-01A
Integrity Check of the RAT after RAT FAULT Warning29-30-00-040-001-AMMEL 29-09-08A
Deactivation of the Reservoir Low-Level Warning29-30-00-040-003-AMMEL 29-09-05A
Deactivation of the Reservoir Quantity Indication of the Green and Blue Hydraulic Systems on the ECAM29-31-00-040-001-AMMEL 29-07-05A
Deactivation of the Reservoir Quantity Indication of the Yellow Hydraulic System on the ECAM29-31-00-040-002-AMMEL 29-07-05A
Deactivation of the Hydraulic Reservoir Quantity-Indicator29-31-00-040-003-AMMEL 29-20-41A
Deactivation of the Reservoir Air Pressure Switches and Check of the Reservoir Air Pressure of the Green and Yellow Hydraulic System29-34-00-040-001-AMMEL 29-09-04A
Deactivation of the Reservoir Air Pressure Switch and Check of the Reservoir Air Pressure of the Blue Hydraulic System29-34-00-040-002-AMMEL 29-09-04A

Ice & Rain Protection – ATA 30

TASKSAMM REFREQUIREMENTS
Deactivation of the Wing Anti-Ice Control Valve to the CLOSED position30-11-00-040-001-AMMEL 30-11-01B
Wing Anti Ice Fault LT – Valve Deactivation30-11-00-040-002-AMMEL 30-01-01-03B
Deactivation of the RH Wing Anti-Ice Control Valve to the OPEN position30-11-00-040-004-AMMEL 30-11-01A
Deactivation of the Engine Anti-Ice Valve in CLOSED Position30-21-00-040-001-AMMEL 30-21-01A
Deactivation of the Engine Anti-Ice Valve in the OPEN Position30-21-00-040-002-AMMEL 30-21-01B
Deactivation of the Air-Intake Anti-Ice Valves30-21-00-040-805-AMMEL 30-21-01B,
MMEL 30-21-01D
Check of the Operation of the Probe Heating Channel30-31-00-040-001-AMMEL 30-31-01A
Check of the ADRS, Heaters and Failure Alerts related to the Probes30-31-00-040-002-AMMEL 30-31-01B,
MMEL 30-31-01C,
MMEL 30-31-03B,
MMEL 30-31-03C,
MMEL 30-31-03D,
MMEL 30-31-04A,
MMEL 30-31-04B,
MMEL 30-31-04C,
MMEL 30-31-02A,
MMEL 30-31-02B,
MMEL 30-31-02C
Deactivation of the Window Heat Computer (WHC)30-42-00-040-001-AMMEL 30-42-01A
Deactivation of the Windshield Wiper30-45-00-040-003-AMMEL 30-45-02B
Deactivation of the Windshield Wiper – FAA Operators Only30-45-00-040-006-AMMEL 30-45-01
Deactivation of the Waste-Water Drain Mast Heating-System30-71-00-040-001-AMMEL 30-71-01A,
MMEL 30-71-01B

Indicating and Recording Systems – ATA 31

TASKSAMM REFREQUIREMENTS
Deactivation of the AIR DATA Selector Switch31-68-00-040-002-AMMEL 31-68-01A
Deactivation of the EIS DMC Selector Switch31-68-00-040-003-AMMEL 31-68-04A
Deactivation of the ATT HDG Selector Switch31-68-00-040-004-AMMEL 31-68-02A
Deactivation of the DMC2 when AC ESS FEED Control is Operative31-68-00-040-005-AMMEL 31-62-02A
Deactivation of the Lower ECAM DU when AC ESS FEED control is operative31-68-00-040-006-AMMEL 31-63-05A

Landing Gear – ATA 32

TASKSAMM REFREQUIREMENTS
Preparation of the Aircraft for Flight with One MLG Door Assembly Missing or One MLG Fixed Fairing Assembly Missing or One Secondary Hinged Fairing Missing32-12-00-040-001-ACDL 52-14,
CDL 52-15,
CDL 52-16
Preparation of the Aircraft for Flight with One MLG Fixed Fairing Assembly Removed or One Secondary Hinged Fairing Removed32-12-00-040-005-ACDL 52-12,
CDL 52-13
Preparation of the Aircraft for Flight with a Failed or Missing Ground Door Opening Cable32-12-00-040-006-AMMEL 32-12-01A
Deactivation of the NLG TOWING attachement32-21-00-040-001-ACDL 32-04
Preparation of the A/C for flight without NLG Main Doors Assy32-22-00-040-001-ACDL 52-09
Preparation of the A/C for flight without one or two NLG Aft Door Assy32-22-00-040-002-ACDL 52-10
Preparation of the A/C for flight without NLG Leg Door Assy32-22-00-040-003-ACDL 52-11
Check of the System 2 Proximity Sensors of the Landing Gear and the Landing Gear Doors32-31-00-040-003-AMMEL 32-32-02A,
MMEL 32-32-03A,
MMEL 32-32-04A,
MMEL 32-32-05A,
MMEL 32-32-06A,
MMEL 32-32-07A,
MMEL 32-32-08A,
MMEL 32-32-09A,
MMEL 32-32-10A,
MMEL 32-32-11A,
MMEL 32-32-12A,
MMEL 32-32-13A,
MMEL 32-32-14A,
MMEL 32-32-15A,
MMEL 32-32-16A,
MMEL 32-32-17A
Deactivation of the Landing Gear Gravity-Extension System32-31-00-040-802-AMMEL 32-33-01A
Deactivation of the Landing Gear Retracting System32-31-00-040-803-AMMEL 32-31-02A
Nose Wheel Hubcap Deactivation32-41-00-040-001-ACDL 32-03
Check of the Nose Wheel when one tie bolt is missing32-41-00-040-002-AMMEL 32-41-01A
Check of the Main Wheel when one tie bolt is missing32-41-00-040-003-AMMEL 32-41-02A
Deactivation of the Normal Braking – With disconnection of the Green Hydraulic Supply32-42-00-040-002-AMMEL 32-42-02A
Deactivation of the Main Wheel Brakes32-42-00-040-003-AMMEL 32-42-01A
Deactivation of the BSCU Channel/System 1 or 232-42-00-040-007-AMMEL 32-42-03A,
MMEL 32-42-04A
Deactivation of the Alternate Braking with disconnection of the Yellow Hydraulic Supply32-43-00-040-001-AMMEL 32-44-01A
Parking Brake-One motor of the parking brake control valve is inoperative32-45-00-040-001-AMMEL 32-45-01A
Check of the BSCU after BRAKES N/WS MINOR FAULT Caution message shown on the Upper Ecam Display Unit32-46-00-040-001-AMMEL 32-09-01B,
MMEL 32-09-01C
Brake Temperature Sensor Deactivation32-47-00-040-001-AMMEL 32-07-01B
Deactivation of the Brake Temperature Monitoring-Unit32-47-00-040-002-AMMEL 32-47-01
Deactivation of the Brake Fan32-48-00-040-803-AMMEL 32-48-01
Deactivation of the Tire Pressure Indicating System (TPIS)32-49-00-040-001-AMMEL 32-09-02A
Deactivation of the Tire Pressure Indicating Computer (TPIC)32-49-00-040-002-AMMEL 32-09-02B
Deactivation of the Nose-Wheel Steering Electrical Deactivation-Box (for Flight)32-51-00-040-002-AMMEL 32-51-03B
Operational Check of the ECAM Landing Gear NOT DOWN Warning32-61-00-040-001-AMMEL 32-61-02A

Lights – ATA 33

TASKSAMM REFREQUIREMENTS
Deactivation of the Cabin NO SMOKING/FASTEN SEAT BELTS/RETURN TO SEAT (NS/FSB/RTS) or NO MOBILES/FASTEN SEAT BELTS/RETURN TO SEAT (NM/FSB/RTS) Signs33-20-00-040-001-AMMEL 33-20-02B
Deactivation of the Lens of the Tail Navigation Light33-41-00-040-002-ACDL 33-03
Deactivation of the Lens of the Rear Navigation and Strobe Light Assembly33-41-00-040-804-ACDL 33-03
Deactivation of the Landing Lights33-42-00-040-001-ACDL 33-07
Deactivation of the Runway Turnoff Light33-43-00-040-002-ACDL 33-08
Deactivation of the Taxi Light33-46-00-040-001-ACDL 33-02
Deactivation of the Take-Off Light33-46-00-040-002-ACDL 33-09
Deactivation of the Logo Light Lens (Cover)33-47-00-040-001-ACDL 33-05
Deactivation of the Anti-Collision (Beacon) Light33-48-00-040-001-ACDL 33-04
Deactivation of the Wing and Engine Scan Light Lens (Cover)33-49-00-040-001-ACDL 33-01
Deactivation of the EMER SYSTEM TEST of the Cabin Emergency Lighting System33-51-00-040-001-AMMEL 33-51-13A

Navigation – ATA 34

TASKSAMM REFREQUIREMENTS
Deactivation of the Air Data Reference (ADR) 2 or 3 (FAA only)34-10-00-040-003-AMMEL 34-10-01
Deactivation of the Radio Altimeter (RA) Systems (FAA Only)34-42-00-040-801-AMMEL 34-42-01

Oxygen – ATA 35

TASKSAMM REFREQUIREMENTS
OXY High Pressure Indication-Direct Reading35-10-00-040-001-AMMEL 35-07-01A
Loss of REGUL LO PR Indication35-10-00-040-002-AMMEL 35-07-02A
Check of the MAN MASK pushbutton when the HI ALT system does not operate35-23-00-040-001-AMMEL 35-01-01-33A
Check of the AUTO control function of the MASK MAN ON pushbutton35-23-00-040-008-AMMEL 35-01-01-31A
Check of the MANUAL Control Function of the MASK MAN ON pushbutton35-23-00-040-802-AMMEL 35-01-01-32A

Pneumatic – ATA 36

TASKSAMM REFREQUIREMENTS
Deactivation of the Bleed Pressure Regulator Valve36-11-00-040-001-AMMEL 36-11-02A
Deactivation of the HP Bleed Valve in the CLOSED Position to Isolate the IP Bleed Check-Valve36-11-00-040-002-AMMEL 36-11-06B
Deactivation of the HP Bleed Valve36-11-00-040-003-AMMEL 36-11-07B
Check of the CFDS to Make Sure that the Pylon Leak Detection and APU Leak Detection Operates Correctly36-11-00-040-004-AMMEL 36-00-01A,
MMEL 36-00-01A,
MMEL 36-00-01D,
MMEL 36-00-01D
Check of the CFDS to Make Sure that the Pylon Leak Detection and APU Leak Detection Loop Operates Correctly in LH Side36-11-00-040-807-AMMEL 36-00-01B,
MMEL 36-00-01B
Check of the CFDS to Make Sure that the Pylon Leak Detection Operates Correctly in RH Side36-11-00-040-808-AMMEL 36-00-01C,
MMEL 36-00-01C
Deactivation of the Bleed Pressure-Regulator Valve36-11-00-040-809-AMMEL 36-11-02A
Deactivation of the HP Bleed Valve in the CLOSED Position to Isolate the IP Bleed Check-Valve36-11-00-040-810-AMMEL 36-11-06B
Deactivation of the HP Bleed Valve36-11-00-040-811-AMMEL 36-11-07B
Deactivation of the Overpressure Valve36-11-00-040-812-AMMEL 36-11-03C
Deactivation of the APU Bleed Check-Valve36-12-00-040-801-AMMEL 36-22-03A
Deactivation of the APU Bleed Check-Valve36-12-00-040-803-AMMEL 36-22-03A
Inspection of the APU Bleed Check-Valve for Correct Condition36-12-00-040-804-AMMEL 36-22-03E
Inspection of the APU Bleed Check-Valve for Correct Condition36-12-00-040-806-AMMEL 36-22-03E
Deactivation of the Pylon Overheat Sensing-Element36-22-00-040-001-AMMEL 36-22-01B,
MMEL 36-22-01C,
MMEL 36-22-01D,
MMEL 36-22-01A

Inert Gas System – ATA 47

TASKAMM REFREQUIREMENTS
Deactivation of the HP Air-Ground Connector Door47-20-00-040-002-ACDL 52-20

APU – ATA 49

TASKSAMM REFREQUIREMENTS
Deactivation of the APU by Circuit Breaker Tagging (APS 3200)49-10-00-040-007-AMMEL 49-10-01C
Deactivation of the APU by APU Substitution Kit (APS 3200)49-10-00-040-007-A 01MMEL 49-10-01C
Deactivation of the APU by Circuit Breaker Tagging (131-9(A))49-10-00-040-008-AMMEL 49-10-01C
Deactivation of the APU by APU Substitution Kit (131-9(A))49-10-00-040-008-A 01MMEL 49-10-01C
Deactivation of the APU Air Intake Flap (APS 3200)49-16-00-040-002-AMMEL 49-10-02B
Deactivation of the APU Air Intake Flap (131-9(A))49-16-00-040-003-AMMEL 49-10-02B
Deactivation of the Bleed Control Valve (APS 3200)49-51-00-040-002-AMMEL 36-12-02A
Deactivation of the APU Load Control-Valve (131-9(A))49-51-00-040-004-AMMEL 36-12-02A
APU LOW OIL LEVEL Indication on ECAM inoperative (APS 3200)49-70-00-040-002-AMMEL 49-07-41A
APU LOW OIL LEVEL Indication on ECAM inoperative (131-9(A))49-70-00-040-003-AMMEL 49-07-41A

Doors – ATA 52

TASKSAMM REFREQUIREMENTS
Check Pressure of Emergency Cylinder/Accumulator of the Passenger/Crew Doors after Programming and Test Panel (PTP) Inoperative52-00-00-040-001-AMMEL 52-10-06A
Check of the Pressure of the Emergency Cylinder/Accumulator of the Passenger/Crew Doors after the Flight Attendant Panel (FAP) Stops52-00-00-040-003-AMMEL 52-10-06A
Check of the Pressure of the Emergency Cylinder/Accumulator of the Passenger/Crew Doors and Emergency Exits52-00-00-040-003-BMMEL 52-10-06A
Deactivation of the Passenger/Crew Doors – Load Adjustment52-10-00-040-001-AMMEL 25-62-01B
Deactivation of the Passenger/Crew Doors – Load Adjustment52-10-00-040-001-A 01MMEL 25-62-01B
Deactivation of the Cabin Doors52-10-00-040-803-AMMEL 52-10-01A
Deactivation of the Cabin Doors52-10-00-040-803-DMMEL 52-10-01A
Deactivation of the Family Aircraft with One Pair of Cabin Overwing Exits and Aft Cabin Doors not Deactivated52-21-00-040-802-AMMEL 52-10-02A
Deactivation of the Family Aircraft with Two Pairs of Cabin Overwing Exits and Aft Cabin Doors not Deactivated52-21-00-040-803-AMMEL 52-10-02A
Deactivation of the Family Aircraft with Two Pairs of Cabin Overwing Exits52-21-00-040-803-BMMEL 52-10-02A
Deactivation of the Flight Lock Actuator (FLA)52-22-71-040-801-AMMEL 52-10-09C
Deactivation of Cargo Doors52-30-00-040-001-AMMEL 52-30-01B
Deactivation of the Electrical Control System of the Forward and Aft Cargo-Compartment Doors (FAA Operators Only)52-30-00-040-003-AMMEL 52-30-04
Deactivation of the Locking Hooks and Spools52-31-00-040-003-AMMEL 52-30-04A
Deactivation of the Forward Cargo-Compartment Door Access-Panel 825AR52-31-00-040-004-ACDL 52-22
Deactivation of the Locking Hooks and Spools52-32-00-040-003-AMMEL 52-30-04A
Deactivation of the Aft Cargo-Compartment Door Access-Panel 826AR52-32-00-040-004-ACDL 52-23
Operation of Bulk Cargo Compartment Door with an inoperative Balance Mechanism52-33-00-040-001-AMMEL 52-33-01A
Deactivation of the Cargo Door Actuator(s)52-36-00-040-001-AMMEL 52-30-02B,
MMEL 52-30-02C
Deactivation of the Hand Pump52-36-00-040-002-AMMEL 52-30-05A
Deactivation of the Access Door of the Blue Hydraulic System52-41-00-040-001-ACDL 52-21
Deactivation of the Refuel/Defuel Control Panel52-42-00-040-001-ACDL 28-02
Deactivation of the Toilet Servicing Door52-42-00-040-002-ACDL 52-01
Deactivation of the External-Power Receptacle Door 121AL52-42-00-040-003-ACDL 52-07
Deactivation of the Access Door of the Hydraulic Ground Connector (197CB, 197EB and 198CB)52-42-00-040-802-ACDL 52-02
Deactivation of the Access Door to Potable Water Filling and Drainage (133AL, 171AL, 192NB)52-42-00-040-803-ACDL 52-03
Deactivation of the Access Door to Potable Water Filling and Drainage (133AL, 171AL)52-42-00-040-804-ACDL 52-03
Deactivation of the Key Pad52-51-00-040-002-AMMEL 52-53-03A
Deactivation of the Key Pad52-51-00-040-003-AMMEL 52-51-03A
Deactivation of the CDLS Normal System52-51-00-040-006-AMMEL 52-51-01B
Deactivation of the Key Pad52-51-00-040-007-AMMEL 52-51-04A
Deactivation of the Door Locking System Selector on the Back Up Panel52-51-00-040-008-AMMEL 52-01-03-34A
Deactivation of the Electrical Release Strikes52-51-00-040-010-AMMEL 52-51-06A,
MMEL 52-51-06B
Check of the Pressure Rate Sensor52-51-00-040-011-AMMEL 52-01-01-03A
Check of the Pressure Rate Sensor of the Back Up Control Panel52-51-00-040-012-AMMEL 52-01-02-03A
Deactivation of the Buzzer of the Cockpit-Door Locking System52-51-00-040-803-AMMEL 52-51-03A
Visual Check to Make Sure that the Cargo Compartment Doors are Correctly Closed52-70-00-040-001-AMMEL 52-07-05A
Visual Check to Make Sure that the Avionics-Compartment Access Doors are Correctly Closed52-70-00-040-004-AMMEL 52-07-06A
Visual Test to Make Sure that the Escape Slide is in the “ARMED” Position52-70-00-040-008-AMMEL 25-07-03A
Visual Test to Make Sure that the Escape Slide is in the “ARMED” Position52-70-00-040-009-AMMEL 25-07-04A
Visual Check of the Emergency Exit Closure and the Slide Arming52-70-00-040-010-AMMEL 52-07-03A,
MMEL 52-07-03B,
MMEL 52-07-03C,
MMEL 52-07-03D
Visual Check of the Emergency Exit Closure and the Slide Arming52-70-00-040-011-AMMEL 52-07-04A,
MMEL 52-07-04B

Fuselage – ATA 53

TASKSAMM REFREQUIREMENTS
Preparation of the Aircraft for Flight with Missing Root Fillet Fairing53-35-00-040-001-ACDL 53-03
Deactivation of the Vanes of the Belly-Fairing Louver-Panel53-35-00-040-802-ACDL 53-01
Deactivation of the Sliding Panel53-35-00-040-803-ACDL 57-02

Nacelles and Pylons – ATA 54

TASKSAMM REFREQUIREMENTS
Deactivation of the Pylon Lateral Access-Door (415AL, 415AR, 425AL or 425AR)54-51-21-040-802-ACDL 54-04
Deactivation of the Pressure Relief Doors54-52-00-040-001-ACDL 54-03
Deactivation of the Aerodynamic Seal54-53-00-040-001-ACDL 54-06

Windows – ATA 56

TASKSAMM REFREQUIREMENTS
Deactivation of the Front Windshield56-10-00-040-001-AMMEL 56-10-01A,
MMEL 56-10-01B,
MMEL 56-10-01C,
MMEL 56-10-01D
Deactivation of the Lateral Fixed or Sliding Window56-10-00-040-002-AMMEL 56-10-02A

Wings – ATA 57

TASKSAMM REFREQUIREMENTS
Deactivation of the Wing-Tip Fence57-31-00-040-001-ACDL 57-01
Preparation of the Aircraft for Flight After Damage to Rubber Seal Under Slats57-40-00-040-001-ACDL 27-07
Deactivation of the Flap-Track Fairing57-55-00-040-001-ACDL 27-01
Deactivation of the Movable-Fairing Top-Cover57-55-00-040-002-ACDL 27-06
Preparation of the Aircraft for Flight after Damage to Flap-Track Fairing Seals57-55-00-040-004-ACDL 27-14,
CDL 27-15
Preparation of the Aircraft for Flight with missing Flap Track Movable Fairing Pivot Cover57-55-00-040-005-ACDL 27-16
Deactivation of the Flap Tab Fairing57-55-00-040-802-ACDL 27-17

Power Plant – ATA 71

TASKSAMM REFREQUIREMENTS
Installation of the High Speed Tape (Nose Air Intake Hoisting Point Plug)71-11-00-040-801-ACDL 71-06
De-activation of the Fan Cowl Hold Open Rod71-13-00-040-803-ACDL 71-09
Filling of the Fan Cowl Door Strake Fastener Holes71-13-00-040-810-ACDL 54-01
Opening of the Fan Cowl Door with One or More Hold Open Rods (HORs) Missing71-13-00-040-812-ACDL 71-09
Deactivation of the Flag before Flight71-13-00-040-816-AMMEL 71-13-01A
Deactivation of the Fan Cowl Hold Open Rod (HOR) Bracket/Fitting71-13-00-040-821-ACDL 71-14
Sealing of the Fan Cowl Door Aerodynamic Strake Fastener Holes71-13-15-040-803-BCDL 54-01
Deactivation of the Air Inlet Hoisting Points Plugs71-60-00-040-801-ACDL 71-06
De-activation of the Frangible Drain Mast71-71-42-040-045-ACDL 71-01

Engine Fuel and Control – ATA 73

TASKSAMM REFREQUIREMENTS
CHECK OF THE ENG FADEC MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE73-29-00-040-001-AMMEL 70-00-01C
Check of the Engine Identification73-29-00-040-802-AMMEL 73-09-08A
Replacement of the Fuel Filter Cartridge73-30-00-040-043-AMMEL 73-09-01A
Replacement of the Fuel Filter Cartridge73-30-00-040-802-AMMEL 73-09-01A
Engine Fuel Filter Change73-34-00-040-803-AMMEL 73-09-03B,
MMEL 73-09-04B,
MMEL 73-09-04D,
MMEL 73-09-09B

Ignition – 74

TASKSAMM REFREQUIREMENTS
Check of the Ignition System74-31-00-040-001-AMMEL 74-09-01B,
MMEL 74-09-01C
Check of Ignition Fault Warning74-31-00-040-002-AMMEL 74-07-01A
Temporary Modification of the JH1 and JH2 Routing for Aircraft Dispatch Requirements74-31-00-040-005-AMMEL 74-31-01A
Temporary Swapping of the Ignition 1 and 2 Systems for Aircraft Dispatch Requirements74-31-00-040-804-AMMEL 74-31-01A
Check of the Ignition System74-31-00-040-805-AMMEL 74-09-01B,
MMEL 74-09-01C

Air – ATA 75

TASKSAMM REFREQUIREMENTS
Deactivation of the High Pressure Turbine Active Clearance Control (HPTACC) Valve75-21-00-040-801-AMMEL 75-24-04A
Deactivation of the Low Pressure Turbine Active Clearance Control (LPTACC) Valve75-22-00-040-801-AMMEL 75-24-03A

Exhaust – ATA 78

TASKSAMM REFREQUIREMENTS
Deactivation of the Thrust Reverser System78-30-00-040-040-BMMEL 78-30-01A
Removal of the Thrust Reverser Lockout Fairing78-30-00-040-804-BCDL 78-11
Deactivation of the Thrust Reverser System for Flight78-30-00-040-808-ACDL 78-71
Deactivation of the TR System after Flight and ECAM warning REV INHIBITED78-30-00-040-810-AMMEL 78-30-01A
Deactivation of the TR System after Flight and ECAM warning REV PRESSURIZED78-30-00-040-811-AMMEL 78-30-01B
Deactivation of the Cascade78-30-00-040-815-ACDL 78-71
Deactivation of the Thrust Reverser System for Translating Sleeve Stop Device Missing78-30-00-040-817-ACDL 78-25
Deactivation of the Thrust Reverser System for Island Fairing Missing78-30-00-040-818-ACDL 78-31
Deactivation of the Thrust Reverser Blocker Door78-32-00-040-813-ACDL 78-03
Deactivation of the PTFE Strip on the Aft Core Cowl of the Thrust Reverser78-32-00-040-814-ACDL 78-68
Deactivation of the Thrust Reverser for Missing Strut78-32-11-040-001-BCDL 78-09
Deactivation of the Cowl Opening Actuator78-36-00-040-801-BCDL 78-01
Opening of the Thrust Reverser (T/R) Cowl Doors with Cowl Opening Actuator Missing78-36-00-040-811-ACDL 78-01
Opening of the Thrust Reverser (T/R) Cowl Doors Hold Open Rod (HOR) Missing78-36-00-040-812-ACDL 78-07
Deactivation of the Thrust-Reverser Actuator Fitting78-36-00-040-813-ACDL 78-14
Deactivation of the Thrust Reverser Hold Open Rod (HOR) Bracket78-36-00-040-814-ACDL 78-42
Removal of the Thrust Reverser Cowl Door When One Engine Bracket is Missing78-36-00-040-815-ACDL 78-42
Deactivation of the Electrical Tertiary Lock System78-37-00-040-803-AMMEL 78-30-04B

Oil – ATA 79

TASKSAMM REFREQUIREMENTS
Operational Test of the Oil Pressure Indicating System79-30-00-040-001-BMMEL 79-07-02A
Check of the Oil System for Oil Quantity79-31-00-040-042-AMMEL 79-07-03A
Check of the Oil System for Oil Quantity79-31-00-040-803-AMMEL 79-07-03A
Replacement of the Main Oil Supply Filter and Check of the Electrical Chip Detector Visual Indicator (pop-out)79-35-00-040-042-AMMEL 79-09-02B
Replacement of the Main Oil Supply Filter and Check of the Electrical Master Chip Detector79-35-00-040-044-AMMEL 79-09-02C
Check for no fault of the Oil Debris Monitoring System79-35-00-040-806-AMMEL 79-09-02F
Inspection of the scavenge screen plugs79-35-00-040-807-AMMEL 79-09-02E
Engine Oil Filter and Oil Debris Monitoring System (ODMS) Operational Check79-35-00-040-808-AMMEL 79-09-02D,
MMEL 79-09-04C,
MMEL 79-09-05C,
MMEL 79-09-07C
Replacement of the Engine Oil Filter and Inspection of the Scavenge Screen Plug79-35-00-040-809-AMMEL 79-09-02A,
MMEL 79-09-04B,
MMEL 79-09-05B,
MMEL 79-09-07B

Starting – ATA 80

TASKSAMM REFREQUIREMENTS
Check of the Starter Valve Manual Handle Position after Engine Start80-11-00-040-044-AMMEL 80-07-01A
Manually Operate the Starter Valve80-11-00-040-045-AMMEL 80-11-01A
Manually Operate the Starter Air Valve80-11-00-040-804-AMMEL 80-11-01A
Check of the Starter Valve Manual Handle Position after Engine Start80-11-00-040-805-AMMEL 80-07-01A

Disclaimer: This is for study and training purposes only. Always refer manufacturer manual and guidelines while performing maintenance on aircraft.

AviationHunt Team

Our team at AviationHunt is a group of aviation experts and enthusiasts. We aim to provide aviation insights, technical notes, best aircraft maintenance practices, and aviation safety tips.