(2) The extended approach surface shall be a plane including the approach surface, and shall also be encircled by the outer base of the approach surface, whose lines extend outward and upward along oblique sides of the approach surface therewith, and parallel to the outer base concerned for a horizontal distance of 15,000 meters from the inner base of the approach surface.〔【出典】日本法令外国語訳データベースシステム 〕
(a) In the case of a space over a densely populated area with human beings or houses, an altitude higher by 300 meters than the top edge of the highest object located within an area with a horizontal distance of 600 meters with the aircraft at its center.〔【出典】日本法令外国語訳データベースシステム 〕
ゴールラインからゴールラインまでのフットボール場の水平距離は100ヤードです。
From goal line to goal line, the horizontal distance of a football field is one hundred yards.
(d) In the case of an object having a width exceeding 45 meters at an elevation of 45 meters or more, or another object having a width of 45 meters at a point that is at a remarkable proximity to an approach surface, transition surface or horizontal plane, said lights shall be installed at points that indicate the approximate outline of the object and the neighboring points do not exceed a horizontal distance of 90 meters.〔【出典】日本法令外国語訳データベースシステム 〕
(c) In the case of an object having a width exceeding 45 meters at an elevation of 45 meters, or another object having a width of 45 meters at a point that is at a remarkable proximity to an approach surface, transition surface or horizontal plane, said lights shall be installed at points that indicate the approximate outline of the object and the neighboring points do not exceed a horizontal distance of 45 meters.〔【出典】日本法令外国語訳データベースシステム 〕
ハ 航空機からの水平距離が千五百メートルである範囲内に雲がないこと。
(c) that no cloud is within the horizontal distance of 1,500 meters from the aircraft.〔【出典】日本法令外国語訳データベースシステム 〕