U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 33Chapter IPart 183Subpart J - Subpart J—Fuel Systems
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A fuel tank is tested by performing the following procedures in the following order:
(a) Fill the tank with air or inert gas to the pressure marked on the tank label under § 183.514(b)(5).
(b) Examine each tank fitting and seam for leaks using a leak detection method other than the pressure drop method.
