Form N-14, Request for Additional Information, Documents or Forms, is not available online. It is issued by an officer if additional information is required in order to complete the naturalization application.
The U.S. Citizenship and Immigration Services department handles all naturalization requests, and its website details how the process works. The officer in charge of the interview process submits the N-14 naturalization form requesting additional details to complete the application, and this request permits a 30-day period for response by the applicant. The applicant needs to respond quickly and accurately to the officer's request in order to help ensure approval of the application.