14 C.F.R. § 135.207 VFR: Helicopter surface reference requirements.
Title 14 - Aeronautics and Space
No person may operate a helicopter under VFR unless that person has visual surface reference or, at night, visual surface light reference, sufficient to safely control the helicopter.
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
§ 135.207 VFR: Helicopter surface reference requirements.
