There's no certification or operational rule requiring accelerate-stop distance to be determined for most small aeroplanes. Were it a rule for performance class B aeroplanes it would be in CAT.POL.A.305. Compare with CAT.POL.A.205 for class A and CAT.POL.A.400 for class C. The consolidated air ops rules are on EUR-Lex (
link) or in the EASA
Easy Access Rules for Air Operations (
link).