39 C.F.R. § 3.6
(a) To enable the Board to monitor the performance of the Postal Service during the most recent accounting periods for which data are available, postal management shall furnish the Board (on a quarterly basis) financial and operating statements for the fiscal year to date, addressing the following categories:
[73 FR 78983, Dec. 24, 2008, as amended at 86 FR 10013, Feb. 18, 2021; 86 FR 24713, May 10, 2021]