14 C.F.R. § 29.961 Fuel system hot weather operation.
Title 14 - Aeronautics and Space
Each suction lift fuel system and other fuel systems conducive to vapor formation must be shown to operate satisfactorily (within certification limits) when using fuel at the most critical temperature for vapor formation under critical operating conditions including, if applicable, the engine operating conditions defined by §29.927(b)(1) and (b)(2). [Amdt. 29–26, 53 FR 34217, Sept. 2, 1988]
Title 14: Aeronautics and Space
PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT
Subpart E—Powerplant
Fuel System
§ 29.961 Fuel system hot weather operation.