44 C.F.R. § 206.367
(b) Repayment. To the extent not otherwise cancelled, Community Disaster Loan funds become due and payable in accordance with the terms and conditions of the Promissory Note. The note shall include the following provisions:
(c) Additional time. In unusual circumstances involving financial hardship, the local government may request an additional period of time beyond the original 10 year term to repay the indebtedness. Such request may be approved by the Assistant Administrator for the Disaster Assistance Directorate subject to the following conditions: