47 CFR 95.1933: Construction requirements.

(a) Each 218-219 MHz Service licensee must make a showing of “substantial service” within ten years of the license grant. Until January 1, 2023, “substantial service” assessment will be made at renewal pursuant to the provisions and procedures contained in § 1.949 of this chapter.

(b) [Reserved]

(c) Failure to demonstrate that substantial service is being provided in the service area will result in forfeiture of the license, and will result in the licensee's ineligibility to apply for 218-219 MHz Service licenses for three years from the date the Commission takes final action affirming that the 218-219 MHz Service license has been canceled pursuant to § 95.1913 of this part.