EASA has published special condition for urban mobility VTOL aircrafts certification

https://www.easa.europa.eu/document-library/product-certification-consultations/special-condition-vtol

Special Condition for small-category VTOL aircraft

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Special Condition for small-category VTOL aircraft - with highlighted text

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Proposed Special Condition for small-category VTOL aircraft

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Comment Response Document - EASA SC-VTOL-01