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CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT (parts 21 to 50) > PART 33—AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES > SUBPART B—Design and Construction; General (§33.11 to §33.29) > 33.21—Engine cooling.
33.21—Engine cooling.
Engine design and construction must provide the necessary cooling under conditions in which the airplane is expected to operate.