Fla. Stat. § 330.40
In the interests of the public welfare, it is unlawful for any person, firm, corporation, or association to install, maintain, or possess any aircraft which has been equipped with, or had installed in its wings or fuselage, fuel tanks, bladders, drums, or other containers which will hold fuel if such fuel tanks, bladders, drums, or other containers do not conform to federal aviation regulations or have not been approved by the Federal Aviation Administration by inspection or special permit. This provision also includes any pipes, hoses, or auxiliary pumps which when present in the aircraft could be used to introduce fuel into the primary fuel system of the aircraft from such tanks, bladders, drums, or containers. Any person who violates any provision of this section is guilty of a felony of the third degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084.
Fla. Stat. § 330.40