47 CFR § 27.803 - Coordination requirements.
(a) Licensees in the 1.4 GHz band will be issued geographic area licenses in accordance with the service areas listed in § 27.6(d) and (e).
(b) Licensees in the 1.4 GHz Service must file a separate station application with the Commission and obtain an individual station license, prior to construction or operation, of any station:
(1) That requires submission of an Environmental Assessment under part 1, § 1.1307 of this chapter;
(2) That requires international coordination;
(3) That operates in areas listed in part 1, § 1.924 of this chapter; or
(4) That requires approval of the Frequency Advisory Subcommittee (FAS) of the Interdepartment Radio Advisory Committee (IRAC). Licensees in the 1432–1435 MHz band must receive FAS approval, prior to operation of fixed sites or mobile units within the NTIA recommended protection radii of the Government sites listed in footnote US83 of § 2.106 of this chapter.
(c) Prior to construction of a station, a licensee in the 1.4 GHz Band must register with the Commission any station antenna structure for which notification to the Federal Aviation Administration is required by part 17 of this chapter.
(d) It is the licensee's responsibility to determine whether an individual station needs referral to the Commission.
(e) The application required in paragraph (b) of this chapter must be filed on the Universal Licensing System.