52.25—When an application for an appeal inspection may be withdrawn.
An application for appeal inspection may be withdrawn by the applicant at any time before the appeal inspection is performed: Provided, That, the applicant shall pay at the hourly rate prescribed in § 52.42, for the time incurred by the inspector in connection with such application, any travel expenses, telephone, telegraph, or other expenses which have been incurred by the inspection service in connection with such application.