Section 217.6 - Extension of filing time(a) If circumstances prevent the filing of a Schedule T-100(f) report on or before the due date prescribed in section 22 of part 241 of this chapter and appendix A of this part, a request for an extension must be filed with the Director, Office of Airline Information.(b) The extension request must be received at the address provided in § 217.10 at least 3 days in advance of the due date, and must set forth reasons to justify granting an extension, and the date when the report can be filed. If a request is denied, the air carrier must submit the required report within 5 days of its receipt of the denial of extension.53 FR 46294, Nov. 16, 1988, as amended at 60 FR 66722, Dec. 26, 1995; Doc. No. DOT-OST-2014-0140, 84 FR 15926 , Apr. 16, 2019