7 C.F.R. § 766.103
(b) If a borrower who is 90 days past due and received FSA-2510 or FSA-2510-IA, or is in non-monetary, or both monetary and non-monetary default and received FSA-2514, and fails to timely respond or does not submit a complete application within the 60-day timeframe, the Agency will notify the borrower by certified mail of the following:
[72 FR 63316, Nov. 8, 2007, as amended at 85 FR 36693, June 17, 2020]