14 CFR §183.13

1. (a)A “Certificate of Designation” and an appropriate Identification Card is issued to each Aviation Medical Examiner and to each forensic pathologist designated under § 183.11(a).
2. (b)A “Certificate of Authority” specifying the kinds of designation for which the person concerned is qualified and stating an expiration date is issued to each Flight Standards Designated Representative, along with a “Certificate of Designation” for display purposes, designating the holder as a Flight Standards Representative and specifying the kind of designation for which he is qualified.
3. (c)A “Certificate of Authority,” stating the specific functions which the person concerned is authorized to perform and stating an expiration date, is issued to each Designated Airworthiness Representative, along with a “Certificate of Designation” for display purposes.