Sec. 25.117  Modification of station license.

    (a) Except as provided for in Sec. 25.118 (Modifications not 
requiring prior authorization), no modification of a radio station 
governed by this part which affects the parameters or terms and 
conditions of the station authorization shall be made except upon 
application to and grant of such application by the Commission. No 
license modification will be required if the licensee seeks to access 
another U.S.-licensed fixed satellite provided:
    (1) Consultations pursuant to Article XIV(d) of the INTELSAT 
Agreement have been completed for the satellites, services and countries 
involved; and
    (2) The operators of the U.S.-licensed systems have received 
specific authorization to provide the services to the proposed 
locations.
    (b) Applications for modification of an earth station license to 
add, change or replace transmitters or antenna facilities conforming to 
Sec. 25.209 will be considered to be minor modifications if the 
particulars of operations remain unchanged and frequency coordination is 
not required, provided however, that the maximum power and power density 
delivered into any antenna at the earth station site shall not exceed 
the values

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calculated by subtracting the maximum antenna gain specified in the 
license from the maximum authorized e.i.r.p. and e.i.r.p. density 
values.
    (c) Applications for modification of earth station authorizations 
shall be submitted on FCC Form 493 except as set forth in paragraph (e) 
of this section.
    (d) Applications for modifications of space station authorizations 
shall be filed in accordance with Sec. 25.114, but only those items of 
information listed in Sec. 25.114(c) that change need to be submitted 
provided the applicant certifies that the remaining information has not 
changed.
    (e) Any application for modification of authorization to extend a 
required date of completion (e.g., begin construction, complete 
construction, launch, bring into operation) shall be filed on FCC Form 
701 (Application for Additional Time to Construct). The application must 
include a verified statement from the applicant:
    (1) That states the additional time is required due to unforeseeable 
circumstances beyond the applicant's control, describes these 
circumstances with specificity, and justifies the precise extension 
period requested; or
    (2) That states there are unique and overriding public interest 
concerns that justify an extension, identifies these interests and 
justifies a precise extension period.
[ 56 FR 24016 , May 28, 1991, as amended at  61 FR 9952 , Mar. 12, 1996;  62 FR 5928 , Feb. 10, 1997]