47 CFR § 87.195
121.5 MHz ELTs
February 16, 2021
ELTs that operate only on frequency 121.5 MHz will no longer be certified. The manufacture, importation, and sale of ELTs that operate only on frequency 121.5 MHz is prohibited beginning July 10, 2019. Existing ELTs that operate only on frequency 121.5 MHz must be operated as certified.
[83 FR 63812, Dec. 12, 2018]