### Question
How is the "aviation fuel" defined?


### Answer
The term **aviation fuel** is defined in *26 U.S.C. § 4093* as follows -

> any liquid (other than any product taxable under section 4081) which is suitable for use as a fuel in an aircraft

#### Citation:
  - *26 U.S.C. § 4093*
  - Heading: **Subtitle D-Miscellaneous Excise Taxes > CHAPTER 32-MANUFACTURERS EXCISE TAXES > Subchapter A-Automotive and Related Items > PART III-PETROLEUM PRODUCTS > Subpart B-Aviation Fuel**

