Fuel system independence.
CFR · 2024-01-01 · US · Title 14
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.
official document · source cfr-2024 · id 14:§ 25.953