§ 135.207 VFR: Helicopter surface reference requirements. 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.
“sufficient” meaning being what is necessary or desirable, or that which is required for meeting a need.
Is it possible, that NO “visual surface light reference” is sufficient (required to meet the need) to “safely control the helicopter”? Think in terms of a high illumination, starry, cloudless night in a highly defined but remote environment devoid of surface lights. Just asking.
Last edited by JimEli; 11th February 2019 at 19:49.
Reason: emphasis added/spelling