; and (iii) by adding at the end the following: (D) by electronic or facsimile transmission to the person to be served or the designated agent of the person; or (E) as designated by regulation or guidance published in the Federal Register. ; and (B) by adding at the end the following: (3) The date of service made by an electronic or facsimile method is— (A) the date an electronic or facsimile transmission is sent; or (B) the date a notification is sent by an electronic or facsimile method that a notice, process, or action is immediately available and accessible in an electronic database. ; and (2) in subsection (c) by striking the first sentence and inserting Service on an agent designated under this section shall be made at the office or usual place of residence of the agent or at the electronic or facsimile address designated by the agent. . 220. Safety and efficiency through digitization of FAA systems (a) In general Not later than 180 days after the date of enactment of this Act, the Administrator shall— (1) identify, at the discretion of the Administrator, not less than 3 processes of the FAA that result in a certification and require paper-based information exchange between external entities and the FAA or offices within the FAA (such as an aircraft certification, aircraft registration, or airmen certification) or authorization, an exemption, or a letter of authorization; and (2) initiate the digitization of such processes. (b) Requirements In carrying out the digitization required under subsection (a), the Administrator shall ensure that the digitization of any process allows for— (1) an applicant to track the application of such applicant throughout the period of submission and review of such application