14 C.F.R. § 25.953 Fuel system independence.
Title 14 - Aeronautics and Space
Each fuel system must meet the requirements of §25.903(b) by— (a) Allowing the supply of fuel to each engine through a system independent of each part of the system supplying fuel to any other engine; or (b) Any other acceptable method.
Title 14: Aeronautics and Space
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
Subpart E—Powerplant
Fuel System
§ 25.953 Fuel system independence.