The agency must send each applicant a written notice of the agency's decision on his application, and, if eligibility is denied, the reasons for the action, the specific regulation supporting the action, and an explanation of his right to request a hearing. (See subpart E of part 431 of this subchapter for rules on hearings.) [44 FR 17937, Mar. 23, 1979, as amended at 51 FR 7211, Feb. 28, 1986. Redesignated at 77 FR 17209, Mar. 23, 2012]