La. Stat. tit. 9 § 2800.11
Notwithstanding any other provision of law to the contrary, except in the parishes of Bossier, Caddo, Jefferson, Orleans, Ouachita, and East Baton Rouge, no municipal or parish airport authority shall be liable for any loss or damage to aircraft parked on an aircraft parking ramp that is operated or maintained by the airport authority, provided that the ramp has signs prominently displayed informing customers or persons using the ramp that the ramp is unattended and that the airport authority is not responsible for losses as a result of theft, vandalism, or damage to property. However, this limitation of liability shall not be applicable if the loss or damage was caused by the gross negligence or willful or wanton misconduct of the airport authority.
La. R.S. § 9:2800.11