Extension of time.
Extension of time. TSA may grant an applicant an extension of time of the limits for good cause shown. An applicant's request for an extension of time must be in writing and be received by TSA within a reasonable time before the due date to be extended; or an applicant may request an extension after the expiration of a due date by sending a written request describing why the failure to file within the time limits was excusable. TSA may grant itself an extension of time for good cause.