When the Board determines that a renewal application does not comply with the requirements of this part, or that it does not relate to a license with reference to an activity of a continuing nature, it will so notify the applicant. The applicant may amend his application to cure the deficiency as a matter of right at any time prior to the date when the application was due pursuant to Sec. 377.10(c). [SPR-84, 40 FR 24998, June 12, 1975]