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3.2 Practical element

Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IRImplementing rule

3.2Practical element

(a)Objective: The objective of practical training is to gain the required competence in performing safe maintenance, inspections and routine work according to the maintenance manual and other relevant instructions and tasks as appropriate for the type of aircraft, for example troubleshooting, repairs, adjustments, replacements, rigging and functional checks. It includes the awareness of the use of all technical literature and documentation for the aircraft, the use of specialist/special tooling and test equipment for performing removal and replacement of components and modules unique to type, including any on-wing maintenance activity.

(b)Content: At least 50 % of the crossed items in the table below, which are relevant to the particular aircraft type, shall be completed as part of the practical training. Tasks crossed represent subjects that are important for practical training purposes to ensure that the operation, function, installation and safety significance of key maintenance tasks is adequately addressed; particularly where these cannot be fully explained by theoretical training alone. Although the list details the minimum practical training subjects, other items may be added where applicable to the particular aircraft type. Tasks to be completed shall be representative of the aircraft and systems both in complexity and in the technical input required to complete that task. While relatively simple tasks may be included, other more complex tasks shall also be incorporated and undertaken as appropriate to the aircraft type. If it exists, the minimum list of practical tasks of the operational suitability data (OSD), established in accordance with Regulation (EU) No 748/2012, shall be part of the practical elements to be selected. Glossary of the table: LOC: Location; FOT: Functional/Operational Test; SGH: Service and Ground Handling; R/I: Removal/Installation; MEL: Minimum Equipment List; TS: TroubleShooting.

ChaptersB1/B2B1B2
LOCFOTSGHR/IMELTSFOTSGHR/IMELTS
Introduction module:
5 Time limits/maintenance checksX/X——————————
6 Dimensions/Areas (MTOM, etc.)X/X——————————
7 Lifting and ShoringX/X——————————
8 Levelling and weighingX/X—X————X———
9 Towing and taxiingX/X—X————X———
10 Parking/mooring, Storing and Return to ServiceX/X—X————X———
11 Placards and MarkingsX/X——————————
12 ServicingX/X—X————X———
20 Standard practices — only type particularX/X—X————X———
Helicopters:
18 Vibration and Noise Analysis (Blade tracking)X/—————X—————
60 Standard Practices Rotor — only type specificX/X—X————X———
62 RotorsX/——XX—X—————
62A Rotors — Monitoring and indicatingX/XXXXXX——X—X
63 Rotor DrivesX/—X———X—————
63A Rotor Drives — Monitoring and indicatingX/XX—XXX——X—X
64 Tail RotorX/——X——X—————
64A Tail rotor -Monitoring and indicatingX/XX—XXX——X—X
65 Tail Rotor DriveX/—X———X—————
65A Tail Rotor Drive — Monitoring and indicatingX/XX—XXX——X—X
66 Folding Blades/PylonX/—XX——X—————
67 Rotors Flight ControlX/—XX—XX—————
53 Airframe Structure (Helicopter) Note: covered under Airframe structures
25 Emergency Flotation EquipmentX/XXXXXXXX———
Airframe structures:
51 Standard Practices and Structures (damage classification, assessment and repair)
53 FuselageX/—————X—————
54 Nacelles/PylonsX/———————————
55 StabilisersX/———————————
56 WindowsX/—————X—————
57 WingsX/———————————
52 DoorsX/XXX————X———
Airframe systems:
21 Air ConditioningX/XXX—XXXX—XX
21A Air SupplyX/XX————X————
21B PressurisationX/XX——XXX——XX
21C Safety and warning DevicesX/X—X————X———
22 AutoflightX/X———X—XXXXX
23 CommunicationsX/X—X—X—XXXXX
24 Electrical PowerX/XXXXXXXXXXX
25 Equipment and FurnishingsX/XXXX——XXX——
25A Electronic Equipment including emergency equipmentX/XXXX——XXX——
26 Fire ProtectionX/XXXXXXXXXXX
27 Flight ControlsX/XXXXXXX————
27A Sys. Operation: Electrical/Fly-by-WireX/XXXXX—X—X—X
28 Fuel SystemsX/XXXXXXXX—X—
28A Fuel Systems — Monitoring and indicatingX/XX————X—X—X
29 Hydraulic PowerX/XXXXXXXX—X—
29A Hydraulic Power — Monitoring and indicatingX/XX—XXXX—XXX
30 Ice and Rain ProtectionX/XXX—XXXX—XX
31 Indicating/Recording SystemsX/XXXXXXXXXXX
31A Instrument SystemsX/XXXXXXXXXXX
32 Landing GearX/XXXXXXXXXX—
32A Landing Gear — Monitoring and indicatingX/XX—XXXX—XXX
33 LightsX/XXX—X—XXXX—
34 NavigationX/X—X—X—XXXXX
35 OxygenX/—XXX——XX———
36 PneumaticX/—X—XXXX—XXX
36A Pneumatic — Monitoring and indicatingX/XXXXXXXXXXX
37 VacuumX/—X—XXX—————
38 Water/WasteX/—XX———XX———
41 Water BallastX/———————————
42 Integrated modular avionicsX/X—————XXXXX
44 Cabin SystemsX/X—————XXXXX
45 On-Board Maintenance System (or covered in 31)X/XXXXXXXXXXX
46 Information SystemsX/X—————X—XXX
47 Nitrogen generation systemX/XXXXXXX———X
50 Cargo and Accessory CompartmentsX/X—X————————
55/57 Flight control surfacesX/—————X—————
Turbine/Piston Engine Module:
70 Standard Practices — Engines — only type particular——X————X———
70A Constructional arrangement and operation (Installation Inlet, Compressors, Combustion Section, Turbine Section, Bearings and Seals, Lubrication Systems)X/X——————————
Turbine engines:
70B Engine Performance—————X—————
71 Power PlantX/—XX————X———
72 Engine Turbine/Turbo Prop/Ducted Fan/ Unducted fanX/———————————
73 Engine Fuel and ControlX/XX—————————
73A FADEC SystemsX/XX—XXXX—XXX
74 IgnitionX/XX————X————
75 AirX/———X—X—————
76 Engine ControlsX/—X———X—————
77 Engine IndicatingX/XX——XXX——XX
78 ExhaustX/—X——X——————
79 OilX/——XX———————
80 StartingX/—X——XX—————
82 Water InjectionX/—X—————————
83 Accessory GearboxesX/——X————————
84 Propulsion AugmentationX/—X—————————
Auxiliary Power Units (APUs):
49 Auxiliary Power Units (APUs)X/—XX——X—————
Piston Engines:
70 Standard Practices — Engines — only type particular——X————X———
70A Constructional arrangement and operation (Installation Inlet, Compressors, Combustion Section, Turbine Section, Bearings and Seals, Lubrication Systems)X/X——————————
70B Engine Performance—————X—————
71 Power PlantX/—XX————X———
73 Engine Fuel and ControlX/XX—————————
73A FADEC SystemsX/XX—XXXXXXXX
74 IgnitionX/XX————X————
76 Engine ControlsX/—X———X—————
77 Engine IndicatingX/XX——XXX——XX
78 ExhaustX/—X——XX—————
79 OilX/——XX———————
80 StartingX/—X——XX—————
81 TurbinesX/—XXX—X—————
82 Water InjectionX/—X—————————
83 Accessory GearboxesX/——XX———————
84 Propulsion AugmentationX/—X—————————
Electric power plant
Electric enginesX/XXXXXXX——X—
Fuel cell and related systemsX/XXXXXXX——X—
BatteriesX/XXXXXXX——X—
Auxiliary systems to the electric power plantX/XXXXXXX—XXX
Propellers:
60A Standard Practices — Propeller———X———————
61 Propellers/ PropulsionX/XXX—XX—————
61A Propeller ConstructionX/X—X————————
61B Propeller Pitch ControlX/—X—XXX—————
61C Propeller SynchronisingX/—X———X———X—
61D Propeller Electronic controlX/XXXXXXXXXXX
61E Propeller Ice ProtectionX/—X—XXX—————
61F Propeller MaintenanceX/XXXXXXXXXXX
Special chapters for aeroplanes with a power plant other than piston/turbine/electric and other than piston/turbine helicoptersFor the relevant aircraft type, definition of special chapters of the theoretical element of the aircraft type training is available in the OSD of the aircraft, established in accordance with Regulation (EU) No 748/2012.
Special chapters for non-conventional aircraftFor the relevant aircraft type, definition of special chapters of the theoretical element of the aircraft type training is available in the OSD of the aircraft, established in accordance with Regulation (EU) No 748/2012.

IR · 3.2 — Regulation (EU) No 1321/2014 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

All rules in APPENDICES TO ANNEX III (Part-66)

Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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