14 C.F.R. § 23.994 Fuel system components.
Title 14 - Aeronautics and Space
Fuel system components in an engine nacelle or in the fuselage must be protected from damage which could result in spillage of enough fuel to constitute a fire hazard as a result of a wheels-up landing on a paved runway. [Amdt. 23–29, 49 FR 6847, Feb. 23, 1984]
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart E—Powerplant
Fuel System Components
§ 23.994 Fuel system components.