14 C.F.R. § 135.205 VFR: Visibility requirements.
Title 14 - Aeronautics and Space
(a) No person may operate an airplane under VFR in uncontrolled airspace when the ceiling is less than 1,000 feet unless flight visibility is at least 2 miles. (b) No person may operate a helicopter under VFR in Class G airspace at an altitude of 1,200 feet or less above the surface or within the lateral boundaries of the surface areas of Class B, Class C, Class D, or Class E airspace designated for an airport unless the visibility is at least— (1) During the day— (2) At night—1 mile. [Doc. No. 16097, 43 FR 46783, Oct. 10, 1978, as amended by Amdt. 135–41, 56 FR 65663, Dec. 17, 1991
Title 14: Aeronautics and Space
PART 135—OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT
Subpart D—VFR/IFR Operating Limitations and Weather Requirements
§ 135.205 VFR: Visibility requirements.
