MEL/CDL Deactivation Tasks for A320 family Aircraft

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).

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.

AH Team

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

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