14 C.F.R. § 29.1109 Carburetor air cooling.
Title 14 - Aeronautics and Space
It must be shown under §29.1043 that each installation using two-stage superchargers has means to maintain the air temperature, at the carburetor inlet, at or below the maximum established value.
Title 14: Aeronautics and Space
PART 29—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT
Subpart E—Powerplant
Induction System
§ 29.1109 Carburetor air cooling.