14 CFR § 323.17 - Delays in discontinuing service.
§ 323.17 Delays in discontinuing service.
If transportation that is the subject of a notice under this part is not discontinued within 90 days of the intended date stated in the notice, a new notice must be filed before the service may be discontinued. However, if DOT requires the carrier to provide service beyond the stated date, the carrier need not file a new notice if it discontinues the service within 90 days after DOT permits it to do so.