An agency making an application for approval, or an approved agency seeking reapproval, shall have the right to appeal any adverse decisions rendered by HUD under this part:
(a) Appeal must be in writing. An agency may make a formal written appeal to HUD.
(b) Timeliness. HUD must receive an appeal within 30 days of the date of the HUD decision letter to the applicant agency. HUD is not bound to review appeals received after this 30-calendar day period.
(c) Other action. Nothing in this section prohibits HUD from taking such other action against an agency as provided in 24 CFR part 24, or from seeking any other remedy against an agency available to HUD by statute or otherwise.