Miss. Code Ann. § 61-17-7: Miss. Code Ann. § 61-17-7

It shall be unlawful for any person, firm, association or corporation to equip any aircraft with, or to install in the wings or fuselage of any aircraft, any fuel tank, bladder, drum or other container which will hold fuel and which does not conform to Federal Aviation Administration regulations or which has not been approved by the Federal Aviation Administration by special permit.