5 CFR §2422.32

1. (a)Certifications. The FLRA issues an appropriate certification when:
   1. (1)After an election, runoff, or rerun:
      1. (i)No party files an objection or challenged ballots are not determinative; or
      2. (ii)The FLRA decides and resolves objections and determinative challenged ballots; or
   2. (2)The FLRA issues a Decision and Order requiring a certification.
2. (b)Revocations. Without prejudice to any rights and obligations that may exist under the Statute, the FLRA revokes a recognition or certification, as appropriate, and provides a written statement of reasons when:
   1. (1)An incumbent exclusive representative files, during a representation proceeding, a disclaimer of any representational interest in the unit; or
   2. (2)A petition is filed and, due to a substantial change in the character and scope of the unit, the unit is no longer appropriate and an election is not warranted.