requirement when nonconformity beyond both the upper and the lower specification of a quality characteristic belongs to the same class, to which a single AQL is applied, mittevastavuse nõue mõlema, nii alumise kui ka ülemise sama klassi kvaliteedikarakteristikute piirnormide ületamiseks, millele rakendub ainult üks vastuvõtukvaliteedi piir, requirement when both upper and lower limits are specified for the quality characteristic and an AQL that applies to the combined percent nonconforming beyound the two limits given