49 C.F.R. § 238.423 Fuel tanks.
Title 49 - Transportation
(a) External fuel tanks. Each type of external fuel tank must be approved by FRA's Associate Administrator for Safety upon a showing that the fuel tank provides a level of safety at least equivalent to a fuel tank that complies with the external fuel tank requirements in §238.223(a). (b) Internal fuel tanks. Internal fuel tanks shall comply with the requirements specified in §238.223(b).
Title 49: Transportation
PART 238—PASSENGER EQUIPMENT SAFETY STANDARDS
Subpart E—Specific Requirements for Tier II Passenger Equipment
§ 238.423 Fuel tanks.
