14 C.F.R. § 121.273 Fire-detector systems.
Title 14 - Aeronautics and Space
Enough quick-acting fire detectors must be provided in each designated fire zone to assure the detection of any fire that may occur in that zone.
Title 14: Aeronautics and Space
PART 121—OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
Subpart J—Special Airworthiness Requirements
§ 121.273 Fire-detector systems.
