47 C.F.R. § 95.2993
To enhance protection of life and property, it is mandatory that each 406 MHz PLB be registered with NOAA and that information be kept up-to-date.
(a) Identification plate or label. In addition to the identification plate or label requirements contained in §§ 2.925 and 2.926 of this chapter, each 406 MHz PLB must be provided on the outside with a clearly discernable permanent plate or label.
(1) The plate or label must contain the following statement:
The owner of this 406 MHz PLB must register the identification code on this label with the National Oceanic and Atmospheric Administration (NOAA) whose address is: NOAA/SARSAT Beacon Registration, NSOF, E/SPO53, 1315 East West Hwy., Silver Spring, MD 20910-9684.
(b) Registration card. With each marketable PLB unit, the manufacturer or equipment certification grantee must include a postage pre-paid registration card.
(4) The registration card must include the following statement:
WARNING—failure to register this PLB with NOAA could result in a monetary forfeiture order being issued to the owner.