145.A.20 Terms of approval and scope of work

Annex II (Part-145) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025

IRImplementing rule

145.A.20Terms of approval and scope of work

(a)The organisation’s scope of work shall be specified in the maintenance organisation exposition (MOE) in accordance with point 145.A.70.

(b)The organisation shall comply with the terms of approval attached to the organisation certificate issued by the competent authority, and with the scope of work specified in the MOE.

IR · 145.A.20 — Regulation (EU) No 1321/2014 · Regulation (EU) 2021/1963 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC1 145.A.20Terms of approval and scope of work

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The following table identifies the ATA Specification 2200 chapter for the category C component rating. If the maintenance manual (or equivalent document) does not follow the ATA Chapters, the corresponding subjects still apply to the applicable C rating.

CLASS	RATING	ATA CHAPTERS
COMPONENTS OTHER THAN COMPLETE ENGINES OR APUs	C1 Air Cond & Press	21
	C2 Auto Flight	22
	C3 Comms and Nav	23 - 34
	C4 Doors - Hatches	52
	C5 Electrical Power & Lights	24 – 33 - 85
	C6 Equipment	25 - 38 - 44 – 45 - 50
	C7 Engine – APU	49 - 71 - 72 - 73 - 74 - 75 - 76 - 77 - 78 - 79 - 80 - 81 - 82 - 83
	C8 Flight Controls	27 - 55 - 57.40 - 57.50 -57.60 - 57.70
	C9 Fuel	28 - 47
	C10 Helicopters - Rotors	62 - 64 - 66 - 67
	C11 Helicopter - Trans	63 - 65
	C12 Hydraulic Power	29
	C13 Indicating/Recording Systems	31 – 42 - 46
	C14 Landing Gear	32
	C15 Oxygen	35
	C16 Propellers	61
	C17 Pneumatic & Vacuum	36 - 37
	C18 Protection ice/rain/fire	26 - 30
	C19 Windows	56
	C20 Structural	53 - 54 - 57.10 - 57.20 - 57.30
	C21 Water Ballast	41
	C22 Propulsion Augmentation	84

AMC · AMC1 145.A.20 — Regulation (EU) No 1321/2014 · ED Decision 2022/011/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

AMCAcceptable means of compliance

AMC2 145.A.20Terms of approval and scope of work

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Facilities such as stores, line stations, component or subcontractors workshops that are not located together with the main facilities of the organisation may be covered by the organisation approval without being identified on the organisation certificate, provided that the MOE identifies these facilities and contains procedures to control such facilities, and the competent authority is satisfied that they form an integral part of the approved maintenance organisation.

AMC · AMC2 145.A.20 — Regulation (EU) No 1321/2014 · ED Decision 2022/011/R · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025

All rules in SECTION A — TECHNICAL AND ORGANISATION REQUIREMENTS

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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