; (B) shall include with a grant made under this paragraph a statement of the reasons of the Commission for making such grant; (C) may extend a grant made under this paragraph for periods not to exceed 180 days; and (D) shall give expeditious treatment to any timely filed petition to deny such application and to any petition for rehearing of such grant filed under section 405. (4) Exclusion Paragraph (2) shall not apply to a request to modify a license for— (A) the addition of an ancillary terrestrial component; or (B) modifying the service offered under the initial license granted under subsection (b) between fixed satellite service and mobile satellite service. (5) Automatic grant of certain modifications Upon notification to the Commission, the Commission may automatically grant a request to modify a license granted under subsection (b), a grant of market access granted under subsection (c), an authorization granted under subsection (d), or a covered authorization, to replace— (A) one space station (or component of such space station) with a technically similar space station (or component of such space station) previously approved by the Commission; or (B) one earth station (or component of such earth station) with a technically similar earth station (or component of such earth station) previously approved by the Commission. (6) Exceptions The deadlines under paragraphs (1) and (2) may be extended by the Commission for a request subject to review under subsection (n). (h) Shared spectrum; protection from harmful interference (1) Grandfathered treatment and sunset of certain authorizations (A) In general For the duration of the covered period— (i) a covered authorization shall not be treated as being granted under subsection (b)(1) or subsection (c)(1) (as the case may be)