North Carolina General Statutes Chapter 1. Civil Procedure § 1-286. Justification of sureties

The written undertaking on appeal must be accompanied by the affidavit of one of the sureties that he is worth double the amount specified therein.  The respondent may except to the sufficiency of the sureties within ten days after the notice of appeal;  and unless they or other sureties justify within the ten days thereafter, the appeal shall be regarded as if no undertaking had been given.  The justification must be upon a notice of not less than five days.