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21.B.75 Special conditions

Annex I · Regulation (EU) No 748/2012 · EAR revision 27 Nov 2025

IRImplementing rule

21.B.75Special conditions

(a)The Agency shall prescribe special detailed technical specifications, named ‘special conditions’, for a product, a UAS or a CMU if the related certification specifications do not contain adequate or appropriate safety standards for the product, UAS or CMU because:

1.the product, the UAS or the CMU has novel or unusual design features relative to the design practices on which the applicable certification specifications are based;

2.the intended use of the product is unconventional; or

3.in-service experience with other similar products, UAS or CMUs or with products or CMUs that have similar design features or newly identified hazards has shown that unsafe conditions may develop.

(b)Special conditions contain such safety standards as the Agency finds necessary in order to establish a level of safety equivalent to that of the applicable certification specifications.

IR · 21.B.75 — Regulation (EU) No 748/2012 · Regulation (EU) 2024/1108 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

GMGuidance material

GM1 21.B.75Special conditions

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GENERAL The term ‘novel or unusual design features’ should be judged in view of the applicable certification basis for the product. A design feature, in particular, should be judged to be a ‘novel or unusual design feature’ when the certification basis does not sufficiently cover this design. The term ‘unsafe condition’ is used with the same meaning as described in GM1 21.A.3B(b). The term ‘newly identified hazards’ is intended to address new risks that may be recognised in the design (e.g. questionable features) or its operational characteristics (e.g. volcanic ash) for which there is not yet enough in-service experience.

GM · GM1 21.B.75 — Regulation (EU) No 748/2012 · ED Decision 2021/001/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025

All rules in SECTION B — PROCEDURES FOR COMPETENT AUTHORITIES

Consolidated from the EASA Easy Access Rules (revision 27 Nov 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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