(a) Subject to notice and opportunity for a hearing, whenever the Secretary finds with respect to a partial claim payment that any servicer has failed to maintain adequate loan accounting records, or to demonstrate proper ability to service loans adequately or to exercise proper credit judgment or has willfully or negligently engaged in practices otherwise detrimental to the interest of veterans or of the Government, the Secretary may refuse either temporarily or permanently to guarantee or insure any loans made by such servicer and may bar such servicer from servicing or acquiring guaranteed loans.

(b) Notwithstanding paragraph (a) of this section, but subject to § 36.4328, the Secretary will not refuse to pay a guaranty or insurance claim on a guaranteed loan theretofore entered into in good faith between a veteran and such servicer.

(c) The Secretary may also refuse either temporarily or permanently to guarantee or insure any loans made by a lender or holder suspended, debarred, denied, or otherwise restricted from participation in FHA's insurance programs pursuant to a determination of the Secretary of Housing and Urban Development.