Section 604.19 - Processing of advisory opinions(a) A request for an advisory opinion shall be sent to the Chief Counsel at ombudsman.charterservice@dot.gov, and filed electronically in the Charter Service Advisory Opinion/Cease and Desist Order docket number FTA-2007-0023 at http://www.regulations.gov or sent to the dockets office located at 1200 New Jersey Ave., SE., West Building Ground Floor, Room W12-140, Washington, DC 20590, for submission to that docket.(b) The Chief Counsel shall make every effort to respond to a request for an advisory opinion within ten days of receipt of a request that complies with § 604.18(b) . The Chief Counsel shall send his or her decision to the interested party, the docket, and the recipient, if appropriate.