Paragraph 5
The amount of any liquid fuel which is specially produced as fuel for a piston engine of an aircraft and is to be sent out from the premises for use solely as fuel for piston engines or aircraft, and which is sent out on that basis.
The amount of any liquid fuel which is specially produced as fuel for a piston engine of an aircraft and is to be sent out from the premises for use solely as fuel for piston engines or aircraft, and which is sent out on that basis.