Tex. Gov't Code § 2205.043
(a) Each aircraft owned or leased by the state, other than an aircraft used for law enforcement purposes, shall be marked:
Added by Acts 1993, 73rd Leg., ch. 268, Sec. 1, eff. Sept. 1, 1993.
Amended by Acts 1995, 74th Leg., ch. 76, Sec. 5.39(a), eff. Sept. 1, 1995.
Acts 2007, 80th Leg., R.S., Ch. 921 (H.B. 3167), Sec. 7.0052, eff. September 1, 2007.
Acts 2017, 85th Leg., R.S., Ch. 533 (S.B. 312), Sec. 69, eff. September 1, 2017.