Sec. 383.028.  TRUSTS AS SECURITY.  (a)  The governing body may additionally secure bonds, including refunding bonds, by a trust indenture under which the trustee may be a bank having trust powers located inside or outside the state.
(b)  Regardless of any mortgage, deed of trust lien, or security interest under Section 383.029, the trust indenture may:
(1)  contain any provision that the governing body prescribes for the security of the bonds and the preservation of the trust estate; 
(2)  provide for amendment or modification of the trust indenture; 
(3)  condition the right to spend the issuer's money or sell an issuer's control facility on approval of a registered professional engineer selected as provided by the trust indenture; 
(4)  contain provisions governing issuance of bonds to replace lost, stolen, or mutilated bonds;  and
(5)  otherwise provide for protecting and enforcing a bondholder's rights and remedies as is reasonable, proper, and lawful.
Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989.