39 C.F.R. § 953.13 Appeal from initial decision.
Title 39 - Postal Service
Either party may file exceptions in a brief on appeal to the Judicial Officer within 5 days after receipt of the initial decision unless additional time is granted. A reply brief may be filed within 5 days after the receipt of the appeal brief by the opposing party.
Title 39: Postal Service
PART 953—RULES OF PRACTICE IN PROCEEDINGS RELATIVE TO MAILABILITY
§ 953.13 Appeal from initial decision.

