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title 14
Aeronautics and Space
chapter I
CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
part 25
PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES
subpart D
Subpart D—Design and Construction
subjgrp 99
Ventilation and Heating
Subjgrp 99. Ventilation and Heating
§ 25.831 - Ventilation.
§ 25.832 - Cabin ozone concentration.
§ 25.833 - Combustion heating systems.
