14 CFR § 25.994
Fuel system components
July 13, 2020
Fuel system components in an engine nacelle or in the fuselage must be protected from damage that could result in spillage of enough fuel to constitute a fire hazard as a result of a wheels-up landing on a paved runway under each of the conditions prescribed in §25.721(b).
[Amdt. 25-139, 79 FR 59430, Oct. 2, 2014]