5 C.F.R. § 1201.92 Criteria for certifying interlocutory appeals.
Title 5 - Administrative Personnel
The judge will certify a ruling for review only if the record shows that: (a) The ruling involves an important question of law or policy about which there is substantial ground for difference of opinion; and (b) An immediate ruling will materially advance the completion of the proceeding, or the denial of an immediate ruling will cause undue harm to a party or the public.
Title 5: Administrative Personnel
PART 1201—PRACTICES AND PROCEDURES
Subpart B—Procedures for Appellate Cases
Interlocutory Appeals
§ 1201.92 Criteria for certifying interlocutory appeals.